[Importance of sucking stimulation in lactation: ultrastructural aspects of mammary glands in the rat].
The Authors refer the results of a study concerning the mammary glands of lactating rats. We made use of rats Wistar subdivided in three groups. Group A: each rat lactates 8 pups. Group B: each rat lactates 4 pups. 8 days before delivery we provided to hide the nipples of a half of breasts with sutures. Group C: They do not lactate. In the 6th day of suckling, after a period of intense suction, we removed the mammary glands. This material was processed for electronic microscopy. Morphological aspects obtained show a difference in development of cytoplasmatic organs specially manifest in R.E.R. and Golgian apparatus.
D000818:Animals; D005260:Female; D007774:Lactation; D008321:Mammary Glands, Animal / Q000648:ultrastructure*; D008854:Microscopy, Electron; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D013391:Sucking Behavior
Importanza dello stimolo suzionale nell'allattamento: quadri ultrastrutturali di ghiandola mammaria di ratto.