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The Labyrinth of the American Bullfrog
2015The labyrinth of the American bullfrog (Rana catesbiana) has been studied by aid of light and electron microscopy. Cell counts and sensory area mapping has been made and it has been shown that scanning electron microscopy is the most appropriate technique at present for cell counts.
H. Engstr�m +2 more
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General and Comparative Endocrinology, 1977
Effects of purified bullfrog (Rana catesbeiana) LH and FSH on plasma levels of the androgens, testosterone (T), and 5α-dihydrotestosterone (DHT), were studied using adult male bullfrogs. Rana LH was considerably more potent than Rana FSH in stimulating increased plasma androgen levels in hypophysectomized and intact animals.
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Effects of purified bullfrog (Rana catesbeiana) LH and FSH on plasma levels of the androgens, testosterone (T), and 5α-dihydrotestosterone (DHT), were studied using adult male bullfrogs. Rana LH was considerably more potent than Rana FSH in stimulating increased plasma androgen levels in hypophysectomized and intact animals.
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Sexual Dimorphism in Bullfrogs
Ecology, 1981Data on body size, age/size at sexual maturity, and adult survival were obtained between 1975 and 1978 for a population of bullfrogs, Rana catesbeiana, at the E. S. George Reserve of the University of Michigan. Both males and females continued to grow when adults; older individuals were often 50% larger than newly matured individuals.
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The labyrinth of the American bullfrog.
Advances in oto-rhino-laryngology, 1979The labyrinth of the American bullfrog (Rana catesbiana) has been studied by aid of light and electron microscopy. Cell counts and sensory area mapping has been made and it has been shown that scanning electron microscopy is the most appropriate technique at present for cell counts.
H, Engström, B, Engström, K, Watanuki
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Development of vasotocin pathways in the bullfrog brain
Cell and Tissue Research, 1994The brain of adult bullfrogs (Rana catesbeiana) contains six populations of cells which are immunoreactive for the neurohypophysial peptide arginine vasotocin (AVT). It is unknown when some of these cell populations first appear during development and when the sexual differences in AVT distribution first become apparent.
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Mental health (London)
Review of a film which shows all too clearly how the already under-priveleged can be heavily penalised by an environment from which only the prosperous can escape.
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Review of a film which shows all too clearly how the already under-priveleged can be heavily penalised by an environment from which only the prosperous can escape.
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