[The cecum lymphoid structure in preterm and full term newborns].
Cellular content of lymphoid structures of coecum of full term and premature newborns was studied by means of quantitative and qualitative statistic analysis. Re-distribution of cells leading to decrease of cell concentration in lymph nodules at the portion overlooking lumen of the coecum and in contrary, to growth of cell number in nodule base was shown to occur within lymphoid nodules in terms from 7.5 months up to birth. By the moment of birth proportion of small lymphocytes in the nodules decreases while the proportion of medium lymphocytes and plasma cells grows higher. The number of granulocytes, macrophages and destroying cells increases as well. Blasts appear and the number of large lymphocytes grow higher. The studies demonstrate that development of lymphoid structures of premature newborns is not completed and thus they are less prepared to the contact with food antigens by the moment of birth.
Aminova
G G
GG
Laboratory of Functional Anatomy, Institute of Human Morphology, RAMS, Moscow.
D002432:Cecum / Q000033:anatomy & histology* / Q000166:cytology; D002452:Cell Count; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008221:Lymphoid Tissue / Q000033:anatomy & histology* / Q000166:cytology