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In order to characterize the secretion pattern of prolactin and GH in freely behaving lactating rats, frequent serial blood samples were collected through indwelling atrial cannulae and their prolactin and GH concentrations determined by radioimmunoassay. At the time of blood sampling, physical contact with the pups was recorded. Plasma prolactin and GH levels showed episodic changes which were independent of each other and there was no apparent correlation between hormone levels and contact between mother and pups. The data suggest that there are episodic fluctuations in plasma prolactin and GH concentrations in lactating rats. These changes do not appear to be closely correlated with the proximity of the mother to her pups.
G Nagy, and
B Kacsóh, and
B Halász
June 1990,
Endocrinologia japonica,
G Nagy, and
B Kacsóh, and
B Halász
January 1978,
Endocrinology,
G Nagy, and
B Kacsóh, and
B Halász
August 1984,
The Journal of endocrinology,
G Nagy, and
B Kacsóh, and
B Halász
January 1982,
Ceskoslovenska fysiologie,
G Nagy, and
B Kacsóh, and
B Halász
September 1984,
Early human development,
G Nagy, and
B Kacsóh, and
B Halász
July 1972,
Endocrinology,
G Nagy, and
B Kacsóh, and
B Halász
December 1991,
Neuroendocrinology,
G Nagy, and
B Kacsóh, and
B Halász
January 2002,
International journal of toxicology,
G Nagy, and
B Kacsóh, and
B Halász
March 1986,
Endocrinology,
G Nagy, and
B Kacsóh, and
B Halász
August 1972,
Science (New York, N.Y.),
