These data are representative of assays performed with two independent litters of rat pups.
Low intensity exercise and varying proportions of dietary glucose and fat modify milk and mammary gland compositions and pup growth.
Animal technicians regularly socialized with the pups inside their pens.
The vocalizations are a by-product of the pups' physiological response to cold stress that involves non-shivering thermogenesis in brown adipose tissue.
Birth of pups after transfer of mouse embryos derived from vitrified preantral follicles.
A total of 22 recipients were used for embryo transfer and one became pregnant, giving birth to seven normal, live pups 20 days after transfer.
All pups from these two litters appeared normal.
The scalp was then sutured, the pup warmed and returned to the dam.
