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Biomedical subjects

J B Graham

Publications and source records attributed to J B Graham.

At least 109 records · Page 6Linked to original sources
PubMed1973

Factor VIII.

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Alleles↗
PubMed1973

Factor VIII.

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Animals↗
PubMed1973

Heat exchnage in the black skipjack, and the blood-gas relationship of warm-bodied fishes.

The black skipjack, Euthynnus lineatus, uses a centrally located vascular heat exchanger to maintain core body temperatures warmer than ambient sea water. The heat exchanger is composed of the dorsal aorta, the posterior cardinal vein, and a large vertical rete. The dorsal aorta is embedded in the posterior cardinal vein and is completely bathed in venous blood. Skipjack hemoglobin appears similar to that of the bluefin tuna in that oxygen capacity is unaffected by changing temperature. Temperature-insensitive hemoglobin may function in warm-bodied fishes to prevent the premature dissociation of oxygen from hemoglobin as blood is warmed en route to the muscles.

Journal Article↗
PubMed1971

Temperature Physiology of the Sea Snake Pelamis platurus: An Index of Its Colonization Potential in the Atlantic Ocean.

The yellow-bellied sea snake Pelamis platurus occurs throughout the tropical Indian and Pacific Oceans from east Africa to Central America. Its latitudinal distribution limits coincide with the 18 degrees C surface isotherm. P. platurus has upper and lower thermal tolerances of 36.0 and 11.7 degrees C. With rapid cooling, P. platurus stops feeding at 16-18 degrees C; however, it has a high resistance to cold temperature and can withstand 5 degrees C for 1 hr. After 10 days' exposure, P. platurus does not acclimate to 17 degrees C and, thus, would not be able to survive for long periods in water this cold.In the event of its transit through the proposed Central American Sea-Level Canal, P. platurus would colonize the Atlantic Ocean and, during the summer months, would be able to extend its north Atlantic distribution to as far as Cape Cod and the English Channel.

Journal Article↗
PubMed1970

Aerial vision: unique adaptation in an intertidal fish.

Mnierpes macrocephalus, a clinid fish of rocky shores of the eastern tropical Pacific, makes frequent terrestrial sojourns. The normal fish eye is myopic in air because of curvature of the cornea. This is overcome in Mnierpes by the presence of two flattened corneal surfaces.

Adaptation, Ocular↗