Filteroptionen
Kategorien
Spezies-Reaktivität
- all (1396)
- bovine (1599)
- canine (801)
- chinese hamster (27)
- duck (9)
- e. coli (4)
- equine (392)
- feline (9)
- gallus (649)
- goat (207)
- guinea pig (255)
- human (30139)
- insect (6)
- monkey (277)
- mouse (13954)
- plant (12)
- porcine (1547)
- rabbit (996)
- rat (10080)
- sheep (203)
- yeast (1)
- zebrafish (75)
Wirt
- all (1)
- bovine (9)
- canine (104)
- chinese hamster (1)
- e. coli (15508)
- equine (2)
- feline (44)
- gallus (8)
- goat (73)
- guinea pig (305)
- hamster (1)
- human (41)
- mouse (9088)
- porcine (24)
- primate (2)
- rabbit (14083)
- rat (132)
- sheep (3)
- yeast (20)
Hersteller
- 2mag (80)
- 3D Bio-Tissues (13)
- 3Helix (12)
- 4basebio (27)
- A. Johnen Verpackungen (15)
- A. Rahf Laborbedarf (4)
- ABM (1)
- ABP Biosciences (760)
- ABclonal (18078)
- ADS Biotec Ltd (120)
- AHN Biotechnologie (34)
- AIT France (410)
- ALPCO (385)
- ARP American Research Products (7406)
- ATAGO (121)
- ATTO-TEC (921)
- Abbexa (344913)
- Abbkine Scientific (3418)
- Abcepta (122299)
- Abeomics (36156)
- Abiel (12)
- Abitec (5560)
- Abmole Bioscience (13198)
- Abnova (97267)
- Absolute Antibody (37307)
- Accelagen (29)
- AcroBiosystems (12016)
- Active Motif (3682)
- AddexBio (506)
- Adooq Bioscience (72532)
- Advantec (1595)
- Affinity Biosciences (33523)
- Agdia EMEA (2270)
- Agrisera (2554)
- Ahlstrom Falun (66)
- Ahlstrom-Munksjö (30)
- Alan and Co (5)
- Albert Kuhn (8)
- Almedica (6)
- Alpha Diagnostic (13915)
- Alpha Laboratories (8)
- AlphaScience (3)
- AlphaTecSystems (207)
- AlphaThera (122)
- Altmann Analytik (3)
- Amarell (168)
- Amcor (4)
- Ampersand Biosciences (130)
- Amplitech (1)
- AnaSpec (2235)
- Ananda Devices (2)
- Anatrace (1850)
- Anogen-Yes Biotech Laboratories (661)
- Antibodies Incorporated (3000)
- Antibodies.com (180240)
- Anton Paar (41)
- ApexBio (26035)
- Apollo Herkenrath (29)
- Apop Biosciences (10)
- Aptum Biologics (116)
- Arbor Assays (205)
- Arctiko (38)
- Arlington Scientific (129)
- As One (895)
- Assay Biotechnology (24650)
- Astra Biotech GmbH (48)
- Atlas Antibodies (45236)
- Aves Labs (379)
- Aviva (263060)
- Azenta (10)
- B-Safety (44)
- B. Braun (261)
- BANDELIN (360)
- BBI Solutions (634)
- BEN Biochemical (218)
- BINDER GmbH (473)
- BIO SB (4158)
- BIOMAT (381)
- BIOZOL (91)
- BMA Biomedicals (1027)
- BOCHEM Instrumente GmbH (809)
- BR Solution (36)
- BRAND (2920)
- BRinova (2)
- BT Lab (25395)
- Bachem (6294)
- Barnstead (11)
- BartelsRieger (61)
- Behr (338)
- Beijing Grinder (158)
- Bel-Art (228)
- BellBrook Labs (290)
- Benchmark Scientific (4)
- Bergmann Kartonagen (9)
- Bierbaum-Proenen (75)
- Bio X Cell (1700)
- BioActs (711)
- BioAssay Systems (290)
- BioAssay Works (103)
- BioChain Institute (2174)
- BioChem Fluidics (447)
- BioPorto Diagnostics (251)
- BioServUK (427)
- BioTeZ (205)
- BioVendor (571)
- Biochrom (90)
- Bioconcept (456)
- Biogenex (639)
- Biolegend (35190)
- Biomatik Corporation (78742)
- Biomedica (21)
- Bionis (34)
- Biorbyt (1664770)
- Bioss (363849)
- Biosynex (118)
- Biosynth (255184)
- Biotium (47190)
- Bioworld Technology (41059)
- BlueGene (99616)
- Boettger (36)
- Bohemia Cristal (144)
- Bohlender (1011)
- Boster Bio (167941)
- Brady (319)
- BrainXell (24)
- Buddeberg (60)
- BÜCHI (44)
- Bürkle (1301)
- C. Giese GmbH (52)
- CALPRO (10)
- CDN (6361)
- CETI (639)
- CH3 BioSystems (180)
- CIL (3243)
- Calibre Scientific (2)
- Cape Biologix Technologies (61)
- Caprico Biotechnologies (4285)
- Cedarlane (24821)
- Cell Biolabs (636)
- Cellcolabs (2)
- CeramTec (4)
- CertoClav (37)
- Chem Service (3790)
- Chondrex (914)
- Chromatrap (868)
- Citotest (6)
- Clonit (276)
- Cloud-Clone (62445)
- Cole-Parmer (76)
- Columbia Biosciences (292)
- Concise Separations (171)
- Coolike (5)
- Cope (1)
- Corning (322)
- Cortez Diagnostics (7)
- Covalab (10814)
- Creative BioMart (48853)
- Creative Biolabs (46891)
- Cryonos (94)
- Crystal (39)
- Cusabio (105943)
- Cyagen Biosciences Inc. (1014)
- Cygnus Technologies (568)
- Cytognos (68)
- Cytoskeleton (436)
- DACOS (10)
- DB-Biotech (483)
- DCS Diagnostics (211)
- DIA.PRO (119)
- DIAsource ImmunoAssays (480)
- DLAB (3)
- DLDEVELOP (30458)
- DOSTMANN electronic (116)
- DRG Instruments (560)
- DWK Life Sciences (1985)
- DYMO (117)
- Daresbury Proteins (58)
- Deutsch und Neumann (449)
- Dextra Laboratories (796)
- Diba (1341)
- Dietmar Knabe (2)
- Dojindo (464)
- Dr. Ehrenstorfer (8674)
- Dr. Weigert (58)
- Dräger (153)
- DuPont (28)
- ELITech (31)
- ELK Biotechnology (25552)
- ESCO Lifesciences GmbH (213)
- EXBIO (4772)
- EXCELITAS (20)
- EastCoast Bio (2077)
- Ebba Biotech (189)
- Echelon Biosciences (2197)
- Ecoli Dx, s.r.o. (270)
- EdgeBio (181)
- Elabscience (32372)
- Elkay (25)
- Elma Schmidbauer GmbH (135)
- Encapsula NanoSciences (17)
- Endotherm (785)
- EnkiLife (29463)
- Enzo Life Sciences (6664)
- Epredia (234)
- Eureka Dry Tech (6)
- EuroClone (431)
- Eurocell (13)
- Everest (6868)
- Excelitas Noblelight GmbH (25)
- FRYKA (29)
- FabGennix (6741)
- Fahsig (3)
- Firebird Optics (52)
- Firefly (915)
- Fluorochem (137351)
- Focus Biomolecules (1706)
- Franz Mensch (21)
- Fritsch (296)
- Fritz Arndt (10)
- Fuller (175)
- Fuller Laboratories (10)
- Funke Gerber (110)
- Future Fields (7)
- GA INTERNATIONAL (41)
- GVS (51)
- Ganterie (4)
- Gebra (40)
- GeneDireX (241)
- GeneTex (48410)
- Generic Assays / Medipan (4)
- Genesee Scientific (5547)
- GenomeMe (537)
- Genscript (14272)
- Gentian (8)
- GenuIN Biotechnologies (8156)
- Gerber Instruments (122)
- Gerd Schneider (12)
- Gerhard Analytical Systems (2)
- Glindemann (8)
- Golden Gate Scientific (4)
- Gorr Transporttechnik (26)
- Grant (391)
- Grauer (14)
- Green Mountain Antibodies (110)
- Greiner Bio-One (74)
- Grün-Pumpen (10)
- Guangzhou JET Bio-Filtration (279)
- HCL (23)
- HK-Pack (23)
- HORO Dr. Hofmann (4)
- HUABIO (10991)
- HUMAN (222)
- HWS Labortechnik (73)
- Hahnemühle (328)
- Hailo (5)
- Hanhart Chronographen 1882 (15)
- HansaBioMed (174)
- Hardy Diagnostics (3092)
- Harry Gestigkeit (71)
- Hartmann (39)
- Heathrow Scientific (505)
- Hecht Glaswarenfabrik (238)
- Heidolph (18)
- Heinz Herenz Hamburg (58)
- Hellma (190)
- HelloBio (1480)
- Heraeus Noblelight (69)
- Hettich Benelux (93)
- Hielscher Ultrasonics (30)
- High Purity Standards (1780)
- Hilgenberg (57)
- Hirschmann Laborgeräte (874)
- Honeywell Safety Products (59)
- Hospidex (22)
- Huber (245)
- Huixia (13)
- Hycult (1366)
- Hülden (17)
- Hünersdorff (99)
- IBA (200)
- ICL (1360)
- IDCP B.V. (57)
- IHC WORLD (635)
- IKA (1235)
- ION Biosciences (119)
- IPHASE Biosciences (931)
- IQ Products (472)
- ISOHEAT GmbH (155)
- ISOLAB (741)
- Ideal-tek (66)
- Igefa (22)
- ImmuQuest (515)
- ImmunoChemistry Technologies (503)
- ImmunoReagents (1114)
- Immunostep (499)
- Industrial Physics (44)
- Ingenetix (492)
- Interstuhl (95)
- Invent BioTechnologies (80)
- Isca Biochemicals (444)
- JUTEC (23)
- Jackson ImmunoResearch (3942)
- Johann W. Schimmel (11)
- Juchheim Laborgeräte (54)
- Julabo (426)
- KD Scientific (18)
- KGW-Isotherm (198)
- KINEMATICA GmbH (114)
- KactusBio (3865)
- Kaiser (2)
- Kamiya Biomedical Company (2277)
- Karl Hammacher (131)
- Kartell LABWARE (619)
- Kautex (295)
- Kementec (81)
- Kerafast (2375)
- Kern und Sohn (1528)
- Keter Luxembourg (1)
- Key Surgical (5)
- Kimberly-Clark (84)
- Kleinfeld Labortechnik (13)
- Klett Kunststofftechnik (12)
- Konus Italia Group (22)
- Korff (36)
- Krishgen Biosystems (28880)
- Kroschke (26)
- Krüss (58)
- Kundert Vario (10)
- Köttermann (56)
- LAUDA (192)
- LEHRICH (19)
- LEONHARDY VP (29)
- LGC Standards (60)
- LKT Labs (3156)
- LLG Labware (16584)
- LMS Consult (1)
- LOSCH (1)
- La-Pha-Pack (81)
- Lab-Club (4190)
- Lampire Biological Labs (2118)
- Lamy Rheology (91)
- Langkavel Office + Lab (24)
- Larodan (478)
- Leadgene Biomedical (1023)
- Lenz Laborglas (1424)
- Licefa (1)
- Liebherr (118)
- LifeSpan Biosciences (1295387)
- LifeTein (24)
- Liga Trap Technologies (37)
- Linaris (5847)
- Linker Industrie-Technik (278)
- Liposoma research (100)
- List Biological Labs (81)
- Ludwig Schneider (400)
- Lutz Pumpen (35)
- Lybe Scientific (19)
- MABTECH (1656)
- MAPA (141)
- MBL (4793)
- MEDITE (3)
- MERCK Millipore (21)
- MP Biomedicals Germany (6645)
- MS Validated Antibodies (543)
- Maassen GmbH (17)
- Macherey-Nagel (2174)
- Manulatex (21)
- Marienfeld (161)
- Matriks Biotechnology (101)
- MaxVision Biosciences (112)
- MedNet (12)
- MedSchenker (14)
- MedchemExpress (224960)
- Medix Biochemica (1574)
- Memmert (290)
- Merck (71)
- MetallWarenfabrik Mühlacker (10)
- Mettler-Toledo (610)
- Micros Produktion (19)
- Miele (105)
- Mikromol (6879)
- Millipore (223)
- Mirus Bio (142)
- MoBiTec (314)
- Molecular Dimension (2136)
- Monosan (2458)
- Montana Molecular (189)
- Morgan Advanced Materials (217)
- MyBiosource (2416694)
- NABAS (24)
- NORMA (75)
- NSJ Bioreagents (37697)
- NZYtech (3479)
- Nabertherm (248)
- NanoHelix (186)
- NanoTag Biotechnologies (283)
- Nanoprobes (231)
- Nasco Sampling (49)
- NeXtal (381)
- NeoBiotechnologies (17250)
- Neuromics (2384)
- Nexotech (6)
- Nitritex (132)
- Nordic BioSite (473907)
- Nordic Lab (74)
- NordicMubio (2858)
- Normag (4)
- Normax (4)
- Normensand (1)
- Novelis Deutschland GmbH (16)
- OHAUS (952)
- OLM Diagnostics (3)
- ORI (3)
- OSRAM (142)
- OZ Biosciences (733)
- OaCP (114)
- Oasis Diagnostics (14)
- Obermeier (7)
- Operon (98)
- Oxford Biomedical Research (955)
- P/S Kunststoffwerke (18)
- PBL Assay Science (138)
- PGP (38)
- PMS TIP TEKNOLOJILERI (45)
- PanPath (692)
- Peak Scientific (7)
- Pfennig Reinigungstechnik GmbH (42)
- Phoenix Instrument (37)
- Phosphosolutions (783)
- Poly-Dtech (76)
- PolyScience (88)
- PrimerDesign (2588)
- ProFoldin (497)
- ProSci (45484)
- ProSpec-Tany Technogene (7023)
- Procell Biotechnology (5716)
- ProteinArk (1187)
- ProteoGenix (31035)
- Qkine (611)
- Quantimetrix (39)
- RD-Biotech (42)
- RJH Biosciences (30)
- ROMMELSBACHER (3)
- RSG Rostfrei (84)
- Randox (2)
- Ratiolab (340)
- Rauschenberger Innovations (4)
- RayBiotech (113105)
- Reagecon (3493)
- Reagena (34)
- Reed Biotech (10548)
- Reitenspieß-Bürsten (97)
- Reliance Biosciences (3)
- Reprocell (268)
- Resch Laborglas (32)
- Retsch (931)
- Rettberg (37)
- RevMAb (461)
- Riken Keiki (30)
- Rische + Herfurth (46)
- Ritter (99)
- Roboscreen (181)
- Rockland Immunochemicals (12666)
- Roland Watzdorf (19)
- Rometsch GmbH (17)
- Rötzmeier Sicherheitsbehälter (76)
- S-Bio (240)
- SCAT Europe GmbH (420)
- SHP (50)
- SOCOREX (366)
- Saint-Gobain (587)
- Salimetrics (57)
- Sanyou Bio (1567)
- Saropack (1)
- Sarstedt (7)
- Sartorius (1874)
- Sceti (3991)
- Scherf Präzision (164)
- Schorpp (9)
- Schott (66)
- Schwan (35)
- Schwegmann Filtrations (31)
- Schweizer (5)
- Schülke und Mayr (14)
- Scientific Industries (62)
- ScyTek Laboratories (3136)
- SeLENOZYME (91)
- Selleck (24035)
- Semperit (109)
- Seramun Diagnostica (33)
- SiLI (17)
- Sievert (2)
- SignalChem (2274)
- SignalChem Diagnostics (876)
- Sileks (16)
- Sino Biological (240903)
- Snoltherm (64)
- Somagenics (164)
- Sonation (4)
- Sonepar Deutschland (2)
- Sontara (9)
- SouthernBiotech (3538)
- Spherotech (1017)
- Starke Laborbedarf (32)
- Starna (25)
- Statens Serum Institut (321)
- StemBioSys (94)
- Sterilin (38)
- Surplus Systems (16)
- Svanova (38)
- Svar Life Science (68)
- Synabs (1241)
- SÖHNGEN (58)
- TENAK (662)
- TFA Dostmann (83)
- TNC Bio (8)
- TOKU-E (2837)
- TargetMol (160147)
- TdB Labs (286)
- The Native Antigen Company (1628)
- Thermax (14)
- Thermo Elect.LED GmbH (1060)
- Thies Clima (2)
- Thomas Pumpen (46)
- Tintometer (541)
- Toronto Bioscience (361)
- Toronto Research Chemicals (93499)
- Trevigen (338)
- Trinity Biotech (50)
- U-CyTech biosciences (341)
- UBPBio, LLC (810)
- UCS Diagnostics (1)
- US Biological (536409)
- USBECK (240)
- Umweltanalytik Holbach (12)
- Unigloves (278)
- Ushio (36)
- VIDIA (114)
- VITRO (2246)
- VMRD (275)
- VOLTRONIC (35)
- VWR (13)
- Vacuubrand (436)
- Vazyme Biotech (991)
- Vector Biolabs (536)
- Vector Laboratories (2564)
- VectorBuilder (537)
- Velp Scientifica (257)
- Vikan (90)
- Virax Biolabs (94)
- ViroStat (1323)
- Virusys (160)
- VmP (8)
- WEDO (38)
- Waldmann (2)
- Waring (17)
- Water-i.d. (106)
- Werner Arzneimittel (8)
- Wilhelm Schröder (9)
- Wolf Maschinenbau AG (4)
- Württ. Drahtwarenfabrik (68)
- Württembergische Allplastik (14)
- Xylem Analytics (738)
- Yashraj Biotechnology (55)
- YouSeq (681)
- ZIRBUS technology (62)
- ZVG Zellstoffvertrieb (47)
- ZellBio (154)
- Zytomed Systems (7765)
- asecos (104)
- baseclick (247)
- biomedis (7)
- dianova (1630)
- edding (140)
- eutecma (18)
- eversyn (8)
- helo (4)
- highQu (125)
- interscience (88)
- magtivio (227)
- messner emtronic (21)
- nanoComposix (538)
- nanoimmunotech (214)
- peptides and elephants (1871)
- proQuarz (49)
- reddot Biotech (34636)
- schuett-biotec (234)
- stakpure (85)
- tec-lab (17)
- tesa (6)
- trenzyme (194)
- uvex (414)
Klon-Bezeichnung
- [1-c3] (1)
- [10] (1)
- [11] (1)
- [13] (1)
- [15-1] (1)
- [15] (1)
- [17] (3)
- [2-2] (1)
- [320000:1] (2)
- [4-1] (1)
- [4-2] (2)
- [5-1] (1)
- [6-2] (1)
- [6-c1] (1)
- [804] (1)
- [a10] (2)
- [a11] (1)
- [a12] (1)
- [c10-1] (1)
- [c103] (1)
- [c10] (24)
- [c11] (9)
- [c12] (14)
- [c13] (11)
- [c1401] (1)
- [c14] (8)
- [c15] (5)
- [c16] (6)
- [c17] (3)
- [c18] (3)
- [c19] (2)
- [c201] (1)
- [c20] (1)
- [c21] (1)
- [c22] (2)
- [c232] (1)
- [c24] (2)
- [c25] (2)
- [c27] (1)
- [c28] (1)
- [c29] (2)
- [c32] (2)
- [c354] (1)
- [c373] (1)
- [c708] (1)
- [c801] (1)
- [c802] (1)
- [c901] (1)
- [c902] (1)
- [c903] (1)
- [cd19] (1)
- [d10] (3)
- [d11] (2)
- [d12] (2)
- [d13] (3)
- [d14] (1)
- [d15] (1)
- [d16] (2)
- [d19] (1)
- [d20] (2)
- [d23] (1)
- [d31] (1)
- [e10] (3)
- [e11] (1)
- [e12] (1)
- [e13] (1)
- [e17] (1)
- [e286-c1] (1)
- [f11] (1)
- [f14] (1)
- [h13] (2)
- [h14] (1)
- [h15] (3)
- [h16] (2)
- [h20] (1)
- [h23] (1)
- [h29] (1)
- [h31] (1)
- [h33] (1)
- [h41] (1)
- [j15] (1)
- [j16] (1)
- [j26] (1)
- [k26] (1)
- [k28] (1)
- [k30] (1)
- [w11] (1)
- [w23] (2)
Active Platelet/Endothelial Cell Adhesion Molecule (PECAM1)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA363HU61 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Platelet/Endothelial Cell Adhesion Molecule (PECAM1)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA363RA61 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Chemokine (C-X-C motif) ligand 7 ( CXCL7)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA370HU01 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Chemokine (C-X-C motif) ligand 7 ( CXCL7)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA370RA01 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Interferon Gamma Induced Protein 10kDa (IP10)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA371HU01 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Gelsolin (GSN)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA372HU61 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Desmin (Des)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA373HU61 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Interleukin 23 Subunit Alpha (IL23a)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA384HU01 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Interleukin 27A (IL27A)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA385HU01 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder
Active Interleukin 27A (IL27A)
- Bilder: 0
- Applikation: 2
| Artikelnummer: | USC-APA385MU61 |
| Hersteller: | Cloud-Clone |
| Applikation: | Activity Assay, Cell Culture |
| Kategorie: | Proteine/Peptide |
| Menge: | 10 ug, 50 ug, 100 ug, 200 ug, 500 ug, 1 mg |
| Preise anzeigen | |
(0) Bilder