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IMMUNOSUPPRESSION IN PRIMARY LIVER AND COLON TUMOR INDUCTION WITH N-HYDROXY-N-2-FLUORENYLACETAMIDE AND AZOXYMETHANE. = L'IMMUNOSUPPRESSION DANS L'INDUCTION DE TUMEURS PRIMITIVES DU FOIE DU COLON PAR LE N-HYDROXY-N-2 FLUORENYL ACETAMIDE ET L'AZOXYMETHANEKROES R; BERKVENS JM; WEISBURGER JH et al.1975; CANCER RES.; U.S.A.; DA. 1975; VOL. 35; NO 10; PP. 2651-2656; BIBL. 34 REF.Article

A HISTOLOGICAL STUDY OF THE ADENOHYPOPHYSIS OF THE RAT. II. A SEMIQUANTITATIVE TIME SEQUENCE STUDY = ETUDE HISTOLOGIQUE DE L'HYPOPHYSE GLANDULAIRE DU RAT. II. ETUDE SEMI-QUANTITATIVE TENANT COMPTE DE L'AGE DE L'ANIMALRUITENBERG EJ; BERKVENS JM; VAN NESSELROOIJ JHJ et al.1974; Z. VERSUCHSTIERKDE; DTSCH.; DA. 1974; VOL. 16; NO 4-5; PP. 252-256; ABS. ALLEM.; BIBL. 19 REF.Article

SPONTANEOUS TUMOURS IN THE PITUITARY GLAND OF OLD WISTAR RATS. A MORPHOLOGICAL AND IMMUNOCYTOCHEMICAL STUDYBERKVENS JM; VAN NESSELROOY JHJ; KROES R et al.1980; J. PATHOL.; GBR; DA. 1980; VOL. 130; NO 3; PP. 179-191; H.T. 8; BIBL. 3 P.Article

A HISTOLOGICAL STUDY OF THE ADENOHYPOPHYSIS OF THE RAT. I. EVALUATION OF SOME SPECIFIC STAINING METHODS = ETUDE HISTOLOGIQUE DE L'HYPOPHYSE GLANDULAIRE DU RAT. I.VALEUR A ATTRIBUER A CERTAINES METHODES DE COLORATION SPECIFIQUESRUITENBERG EJ; BERKVENS JM; VAN NESSELROOIJ JHJ et al.1974; Z. VERSUCHSTIERKDE; DTSCH.; DA. 1974; VOL. 16; NO 4-5; PP. 247-252; H.T. 1; ABS. ALLEM.; BIBL. 15REF.Article

ACUTE ORAL TOXICITY OF INORGANIC COBALT COMPOUNDS IN RATSSPEIJERS GJA; KRAJNC EI; BERKVENS JM et al.1982; FOOD CHEM. TOXICOL.; ISSN 505927; GBR; DA. 1982; VOL. 20; NO 3; PP. 311-314; BIBL. 8 REF.Article

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MALEIC HYDRAZIDE, CARCINOGENICITY STUDY IN RATSVAN DER HEIJDEN CA; DEN TONKELAAR EM; GARBIS BERKVENS JM et al.1981; TOXICOLOGY (AMST.); ISSN 0300-483X; NLD; DA. 1981; VOL. 19; NO 2; PP. 139-150; BIBL. 24 REF.Article

LONG-TERM TOXICITY AND REPRODUCTION STUDIES WITH METALDEHYDE IN RATS = ETUDES DE LA TOXICITE A LONG TERME ET DE LA REPRODUCTION AVEC LE METALDEHYDE CHEZ DES RATSVERSCHUUREN HG; KROES R; DEN TONKELAAR EM et al.1975; TOXICOLOGY; NETHERL.; DA. 1975; VOL. 4; NO 1; PP. 97-115; BIBL. 10 REF.Article

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TOXICITY OF METHYLMERCURY CHLORIDE IN RATS. I. SHORT-TERM STUDY.VERSCHUUREN HG; KROES R; DEN TONKELAAR EM et al.1976; TOXICOLOGY; NETHERL.; DA. 1976; VOL. 6; NO 1; PP. 85-96; BIBL. 18 REF.Article

TOXICITY OF METHYLMERCURY CHLORIDE IN RATS. II. REPRODUCTION STUDY.VERSCHUUREN HG; KROES R; DEN TONKELAAR EM et al.1976; TOXICOLOGY; NETHERL.; DA. 1976; VOL. 6; NO 1; PP. 97-106; BIBL. 2 REF.Article