The cytotrophoblast, deep inside, consists in an inner irregular layer of ovoid, single- nucleus cells. This is also where intensive mitotic activity takes place. In the periphery the syncytiotrophoblast forms a syncytium, i.e., a multi-nucleic layer without cell boundaries that arises from the fusion of cytotrophoblast cells.
Define Aryl group. Aryl group synonyms, Aryl group pronunciation, Aryl group translation, English dictionary definition of Aryl group. n. A compound containing benzene or another aromatic hydrocarbon, or a univalent group derived from such a compound by removal of a hydrogen atom attached...
Butyl is the largest substituent for which trivial names are commonly used for all isomers. The butyl group's carbon that is connected to the rest (R) of the molecule is called the R I or R-prime carbon.he prefixes sec (from secondary) and tert (from tertiary) refer to the number of additional side chains connected to the first butyl carbon. The prefix iso (from isomer) means equal while the prefix ' n- ' stands for normal.