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Journal of Cell Science, Vol 7, 273-283, Copyright © 1970 by Company of Biologists
Submitted on December 3, 1969
1 Department of Biochemistry, University of Adelaide, South Australia, 5001
Keratins from the differentiating cortical cells of the guinea-pig hair follicle have been studied by immunological and immunofluorescent procedures. Antisera were prepared to the unfractionated keratin proteins from the follicle and the specificity of these antisera examined by immunodiffusion and immunoelectrophoresis. The major follicle antigens were the low-sulphur keratins, and the antibodies were specific for these and related
keratins. Use of the precipitin reaction as a quantitative immunoassay for follicle keratins has been demonstrated. The fluorescent antibody technique has been applied to the hair follicle and the follicle antigens have been localized by this procedure in the cytoplasm of the developing cortical cells. By this technique keratin could not be detected in the proliferative cells of the bulb region of the follicle supporting the view that keratin synthesis begins only when the cells enter the upper bulb region of the follicle.