Ultrastructural studies on the morula in cattle
Kuryszko, J.; Marcinkowski, K.
Zeitschrift für Mikroskopisch-Anatomische Forschung 104(3): 521-526
1990
ISSN/ISBN: 0044-3107 PMID: 2238797 Document Number: 358856
Embryos at morula stage were ultrastructurally examined. Blastomeres of normal embryos are characterized by the presence of ribosomes, short single and branched cisterns of endoplasmic reticulum, small spherical mitochondria and vacuolar-granular structures. An enhanced autophagy and the presence of numerous and large lipid droplets are signs of the beginning degeneration.