gill and liver microsomal na+/k+-adenosine triphosphatase ( atpase ) activities and plasma levels of 3,5,3'-triiodo-l-thyronine ( t3 ) were measured in rainbow trout ( 100-300 g ) immersed in a freshwater solution of t3 for 6 or 7 days at 11 degrees c .
C0001479
na
C0001473
atpase