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Untreated male and female rat pups were killed 1--5 days post partum and the serum concentrations of testosterone, oestrogens, LH and FSH were determined by radioimmunoassay. At all five sampling times, the serum concentrations of testosterone in male rats were about three times higher than those in female rats, but serum levels of oestrogens did not differ between the sexes. Serum concentrations of LH and FSH were lower in male than in female pups. In another study, rats were decapitated 1--10 days after birth and serum concentrations of testosterone were determined with a different radioimmunoassay. Again, at all four sampling times, the concentration of testosterone was significantly higher in the male than in the female pups.
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
January 1984,
Archives of toxicology. Supplement. = Archiv fur Toxikologie. Supplement,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
November 1979,
The Journal of endocrinology,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
September 1973,
Taiwan yi xue hui za zhi. Journal of the Formosan Medical Association,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
December 1993,
Pediatric research,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
January 1993,
Journal of reproduction and fertility. Supplement,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
July 1977,
The Journal of endocrinology,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
September 1980,
Journal of animal science,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
September 1977,
Journal of toxicology and environmental health,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
September 1976,
The Journal of endocrinology,
S F Pang, and
A R Caggiula, and
V L Gay, and
R L Goodman, and
C S Pang
December 1983,
Toxicology letters,
