A SIMPLE METHOD FOR THE PURIFICATION OF 5-AMINOSALICYLIC ACID. APPLICATION OF THE PRODUCT AS SUBSTRATE IN ENZYME-LINKED IMMUNOSORBENT ASSAY (ELISA)ELLENS DJ; GIELKENS LJ.1980; J. IMMUNOL. METHODS; ISSN 0022-1759; NLD; DA. 1980; VOL. 37; NO 3-4; PP. 325-332; BIBL. 10 REF.Article

ENZYME-LINKED IMMUNOSORBENT ASSAY FOR DIAGNOSIS OF ROTAVIRUS INFECTIONS IN CALVES.ELLENS DJ; DE LEEUW PW.1977; J. CLIN. MICROBIOL.; U.S.A.; DA. 1977; VOL. 6; NO 5; PP. 530-532; BIBL. 18 REF.Article

PURIFICATION AND ELECTRON MICROSCOPY OF LACTIC DEHYDROGENASE VIRUS OF MICEHORZINEK MC; VAN WIELINK PS; ELLENS DJ et al.1975; J. GEN. VIROL.; G.B.; DA. 1975; VOL. 26; NO 3; PP. 217-226; BIBL. 21 REF.Article

FELINE INFECTIONS PERITONITIS VIRUS.HORZINEK MC; OSTERHAUS ADME; ELLENS DJ et al.1977; ZBL. VETER.-MED., B; DTSCH.; DA. 1977; VOL. 24; NO 5; PP. 398-405; ABS. ALLEM. FR. ESP.; BIBL. 11 REF.Article

STUDIES ON THE MECHANISM OF REPLICATION OF ADENOVIRUS DNA. III. ELECTRON MICROSCOPY OF REPLICATING DNAELLENS DJ; SUSSENBACH JS; JANSZ HS et al.1974; VIROLOGY; U.S.A.; DA. 1974; VOL. 61; NO 2; PP. 427-442; BIBL. 1P.Article

IDENTIFICATION AND CHARACTERIZATION OF A PAPILLOMAVIRUS FROM BIRDS (FRINGILLIDAE).OSTERHAUS ADME; ELLENS DJ; HORZINEK MC et al.1977; INTERVIROLOGY; SWITZ.; DA. 1977; VOL. 8; NO 6; PP. 351-359; BIBL. 1 P.Article

COMPARISON OF FIVE DIAGNOSTIC METHODS FOR THE DETECTION OF ROTAVIRUS ANTIGENS IN CALF FAECESELLENS DJ; DE LEEUW PW; STRAVER PJ et al.1977; MED. MICROBIOL. IMMUNOL.; DEU; DA. 1977; VOL. 166; NO 1-4; PP. 157-163; BIBL. 1 P.Conference Paper

ROTAVIRUS INFECTIONS IN CALVES: EFFICACY OF ORAL VACCINATION IN ENDEMICALLY INFECTED HERDSDE LEEUW PW; ELLENS DJ; TALMON FP et al.1980; RES. VET. SCI.; ISSN 0034-5288; GBR; DA. 1980; VOL. 29; NO 2; PP. 142-147; BIBL. 14 REF.Article

A MUTANT OF ESCHERICHIA COLI K12 DEFICIENT IN THE 5-3 EXONUCLEOLYTIC ACTIVITY OF DNA POLYMERASE I. II. PURIFICATION AND PROPERTIES OF THE MUTANT ENZYMEHEIJNEKER HL; ELLENS DJ; TJEERDE RH et al.1973; MOLEC. GEN. GENET.; GERM.; DA. 1973; VOL. 124; NO 1; PP. 83-96; BIBL. 1P.1/2Serial Issue

ROTAVIRUS INFECTIONS IN CALVES IN DAIRY HERDSDE LEEUW PW; ELLENS DJ; STRAVER PJ et al.1980; RES. VET. SCI.; ISSN 0034-5288; GBR; DA. 1980; VOL. 29; NO 3; PP. 135-141; BIBL. 23 REF.Article

STUDIES ON BOVINE LEUKAEMIA. II. HAEMATOLOGICAL, SEROLOGICAL, VIROLOGICAL AND ELECTRON MICROSCOPICAL DIAGNOSIS.RESSANG AA; ELLENS DJ; MASTENBROEK N et al.1976; ZBL. VETER.-MED., B; DTSCH.; DA. 1976; VOL. 23; NO 7; PP. 566-579; ABS. ALLEM. FR. ESP.; BIBL. 29 REF.Article