Challana Amit, Gupta Anuradha, Bansal Neelam, Uppal Varinder
Department of Veterinary Anatomy, College of Veterinary Sciences, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India.
Anat Res Int. 2014;2014:687936. doi: 10.1155/2014/687936. Epub 2014 Apr 27.
The present research was elucidated on the morphogenesis of mammary gland of buffalo during prenatal development. Total of 16 foetuses ranging from 1.2 cm (34 days) to 108 cm CVRL (curved crown rump length) (317 days) were used for study. The study revealed that mammary line was first observed at 1.2 cm CVRL (34 days), mammary hillock at 1.7 cm (37 days), and mammary bud at 2.6 cm CVRL (41 days) foetuses. Epidermal cone was found at 6.7 cm CVRL (58 days) whereas primary and secondary ducts were observed at 7.4 cm CVRL (62 days) and 15 cm CVRL (96 days), respectively. Connective tissue whorls were reported at 18.2 cm CVRL (110 days) and internal elastic lamina and muscle layers at 24.1 cm CVRL (129 days). Lobules were observed at 29.3 cm CVRL (140 days), rosette of furstenberg at 39.5 cm CVRL (163 days), and keratin plug at 45.5 cm CVRL (176 days) foetus. Primordia of sweat and sebaceous glands around hair follicle were seen at 21.2 cm CVRL (122 days) of foetal life. Differentiation of all the skin layers along with cornification was observed at 69 cm (229 days) in group III foetuses.
本研究阐明了水牛产前发育期间乳腺的形态发生。总共使用了16个胎儿，其弯曲冠臀长（CVRL）范围从1.2厘米（34天）到108厘米（317天）用于研究。研究表明，在CVRL为1.2厘米（34天）的胎儿中首次观察到乳腺线，在1.7厘米（37天）时观察到乳腺小丘，在CVRL为2.6厘米（41天）的胎儿中观察到乳腺芽。在CVRL为6.7厘米（58天）时发现表皮锥，而在CVRL为7.4厘米（62天）和15厘米（96天）时分别观察到初级和次级导管。在CVRL为18.2厘米（110天）时报告有结缔组织涡旋，在CVRL为24.1厘米（129天）时观察到内弹性膜和肌肉层。在CVRL为29.3厘米（140天）的胎儿中观察到小叶，在CVRL为39.5厘米（163天）时观察到弗斯滕贝格玫瑰花结，在CVRL为45.5厘米（176天）的胎儿中观察到角质栓。在胎儿生命的CVRL为21.2厘米（122天）时可见毛囊周围汗腺和皮脂腺的原基。在III组胎儿中，在69厘米（229天）时观察到所有皮肤层的分化以及角质化。
