Figure 1From: Human embryonal epithelial cells of the developing small intestinal crypts can express the Hodgkin-cell associated antigen Ki-1 (CD30) in spontaneous abortions during the first trimester of gestation8th week of gestation (involuntary abortions). Ki-1 (CD30) antigen is expressed by a small number of epithelial cryptae cells. Immunohistochemical stain X 400.Back to article page