Apoptosis has been a biological phenomenon of intense interest for 20 years. but the earlier morphological features of apoptosis have not been determined hitherto. Using the methods of semi- and ultrathin sections. the livers of intact embryos and young rats have been studied under the effect of cycloheximide to determine morphological features of an early stage of apoptosis. https://lecoureures.shop/product-category/ski-de-fond-equipement-fixations-pieces-de-rechange/