APA

Frame S. R., Janney D. M. & Warheit D. B. (19970522). Proliferative activity of keratoacanthoma and para-aramid-induced keratinizing squamous lesions of the lungs of rats as assessed by the proliferating cell nuclear antigen and nucleolar organizer regions. : Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie.

Chicago

Frame S R, Janney D M and Warheit D B. 19970522. Proliferative activity of keratoacanthoma and para-aramid-induced keratinizing squamous lesions of the lungs of rats as assessed by the proliferating cell nuclear antigen and nucleolar organizer regions. : Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie.

Harvard

Frame S. R., Janney D. M. and Warheit D. B. (19970522). Proliferative activity of keratoacanthoma and para-aramid-induced keratinizing squamous lesions of the lungs of rats as assessed by the proliferating cell nuclear antigen and nucleolar organizer regions. : Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie.

MLA

Frame S R, Janney D M and Warheit D B. Proliferative activity of keratoacanthoma and para-aramid-induced keratinizing squamous lesions of the lungs of rats as assessed by the proliferating cell nuclear antigen and nucleolar organizer regions. : Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie. 19970522.