title: Multiple biopsies of guinea pig mammary glands during pregnancy and lactation.
abstract: Mammary gland biopsies were obtained from 39 guinea pigs during late pregnancy, lactation and weaning. Up to eight samples, each weighing 60--200 mg, were taken from each animal in two independent studies. No mortalities resulted, and no interference with lactation or suckling was observed.
mesh_terms: D000818:Animals; D001706:Biopsy / Q000662:veterinary; D005260:Female; D006168:Guinea Pigs; D007774:Lactation; D008321:Mammary Glands, Animal / Q000033:anatomy & histology*; D011247:Pregnancy; D011270:Pregnancy, Animal