Results 161 to 170 of about 10,355 (218)

Microbiological Studies on Septicemic Bullfrogs (Rana catesbeiana)

American Journal of Veterinary Research, 1974
SUMMARY Microbiological studies were made on Louisiana bullfrogs and tadpoles (Rana catesbeiana) with signs of classic red-leg disease. A group of bacteria commonly found in the aquatic environment was isolated from the blood of the diseased frogs. The same isolates induced red-leg disease when inoculated into healthy frogs and tadpoles.
J C, Glorioso, R L, Amborski, G F, Amborski, D D, Culley   +3 more
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Immunoglobulins in the Developing Amphibian, Rana Catesbeiana

The Journal of Immunology, 1973
Abstract Rana catesbeiana tadpoles contain high molecular weight and low molecular weight immunoglobulins that closely resemble, in structural and antigenic features, the corresponding immunoglobulins in adult bullfrogs. Although the low molecular weight immunoglobulins are antigenically heterogeneous, all the antigenic species found in ...
C L, Geczy, P C, Green, L A, Steiner
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Neurohypophysial function in bullfrog (Rana catesbeiana) tadpoles

General and Comparative Endocrinology, 1970
Abstract Bullfrog tadpoles retain water when injected with vasotocin. This response is very small in young tadpoles but increases later, especially just prior to metamorphorsis. Vasotocin also increases the osmotic permeability of the skin in such tadpoles.
P J, Bentley, L, Greenwald
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Physiological color change in the bullfrog,Rana catesbeiana

Journal of Experimental Zoology, 1999
Adults of Rana catesbeiana maintained for 4 days in 12:12 light/dark regimen exhibited a rhythmic color change of 24 hr. Under constant light, however, the rhythm disappeared, and the reflectance values gradually became greater, that is the animals became lighter.
C R, Camargo, M A, Visconti, A M, Castrucci   +2 more
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Low Molecular Weight Immunoglobulins in Rana Catesbeiana Tadpoles

The Journal of Immunology, 1976
Abstract Rana catesbeiana tadpoles formed high and low m. w. antibodies in response to immunization with a bacteriophage. Although the neutralizing activity associated with the low m. w. immunoglobulins was relatively weak, the existence of antibodies in this class was clearly demonstrated by radioimmunoelectrophoresis.
C, Green, L A, Steiner
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Pharmacokinetics of kanamycin in the bullfrog, Rana catesbeiana

Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1987
1. Kanamycin disposition was studied in bullfrogs (Rana catesbeiana) following single doses IP. Both plasma t1/2 and Vd of the drug increased with increasing time after drug indicating redistribution and tight binding of kanamycin to deep tissue compartments. 2. Kanamycin was eliminated unchanged with a t1/2 plasma = 27 hr; perilymph = 89 hr; endolymph
K E, Fox, N J, Russell
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Catalytic lectin (leczyme) from bullfrog (Rana catesbeiana) eggs

International Journal of Oncology, 1996
Catalytic lectins (leczymes) of frog eggs are sialic acid-binding lectins that have intrinsic RNase activity. They inhibit tumor cell proliferation in vitro and in vivo, although their cytotoxic mechanism remains unclear. RNase A has no tumoricidal activity.
K, Nitta, K, Ozaki, Y, Tsukamoto, M, Hosono, Y, Ogawakonno, H, Kawauchi, Y, Takayanagi, S, Tsuiki, S, Hakomori   +8 more
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Temperature selection by the bullfrog, Rana catesbeiana

Comparative Biochemistry and Physiology Part A: Physiology, 1971
Abstract 1. 1. Behavioral responses of juvenile bullfrogs, both in an aquatic temperature gradient and in an apparatus which offers a choice of discrete water temperatures, demonstrate a capability for maintaining specific levels of nearly constant body temperature by selection of an appropriate thermal environment. 2. 2.
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Multiple adenosine deaminases in the frog (Rana catesbeiana)

Comparative Biochemistry and Physiology, 1968
Abstract 1. 1. Three classes of adenosine deaminases have been found in frog tissues. Types A, B and C have molecular weights in the range of 180,000, 100,000 and 35,000 respectively. Studies of tissues from a wide variety of vertebrates have shown that all of these enzyme types are widespread among vertebrates (Ma & Fisher, unpublished results).
P F, Ma, J R, Fisher
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Calcium Metabolism in Bullfrog Tadpoles (Rana Catesbeiana)

Journal of Experimental Biology, 1980
ABSTRACT Non-feeding bullfrog (Rana catesbeiana) tadpoles can maintain their body Ca concentration in artificial pond waters containing a range of Ca concen-trations. The rate of uptake of 45Ca increases when the tadpoles are pre-adapted to a low-Ca pond water and declines when they are pre-adapted to high Ca.
G F, Baldwin, P J, Bentley
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