[Organ cultures of human embryonic and fetal cartilage tissue (histological and histochemical studies)].

The author examined histologically and histochemically the peculiarities of tendon tissue of human embryos and fetuses. Inferences were made that under the conditions of organ culture for 7 days in the explanted tendon pieces there were histological peculiarities, characteristic of the reactions of the embryonal tendon tissue in the preparation and of the ossification with formation of "a zone of cellular columns". Processes of ossification were not observed which is explained by the lack of vascular in the explants. He found a reduced amount of acid glycosaminoglycans, an increase of the amount of neutral mucopolysaccharides and topographic redistribution of lipids and glycogen contrary to the data, observed in the control tissues.