J
symbol for joule.
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J antigen
the basis of the J blood group system in cattle.
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J chain
a small polypeptide that links (joins) monomeric components of IgM and IgA molecules; responsible for maintaining the polymeric form.
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J genes
genes coding for the J chain of IgM and IgA molecules.
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J receptor
see juxtacapillary receptor.
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jaagsiekte
[Af.] 1. see ovine pulmonary adenomatosis. 2. pyrrolizidine alkaloidosis of horses caused by Crotalaria dura, C. globifera, C. juncea. Term means ‘panting sickness’ with reference to prominent lung lesions.
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jabot
see frilled.
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jack
1. male donkey; called a stallion in Great Britain. 2. see track leg.
j. colt male donkey less than 3 years of age.
mule j. one bred to mares for the production of mules.
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jack bean
see canavalia ensiformis.
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jack rabbit
the common American Hare. Called also Lepus californicus.
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