the short-term effects on norepinephrine ( ne ) , epinephrine ( e ) , glucocorticoid ( cs ) and testosterone ( t ) levels of ( a ) taking blood samples , and ( b ) an agonistic encounter in an experienced fighter 's home cage were examined in 15 male guinea pigs living in large heterosexual colonies for 8 to 19 months .
C0028351
norepinephrine
C0014563
epinephrine