The persistence in the field of two characteristic isoenzyme patterns in Nigerian Trypanosoma vivax.
D000818:Animals; D002417:Cattle / Q000469:parasitology; D007527:Isoenzymes / Q000145:classification; D009549:Nigeria; D000637:Transaminases / Q000378:metabolism; D014345:Trypanosoma / Q000145:classification / Q000201:enzymology*
D007527:Isoenzymes; D000637:Transaminases