the mechanism of formation of the a/b cis ring junction of ecdysteroids in the locust schistocerca gregaria , was investigated by incorporation of [ 4-14c,3 alpha-3h ] , [ 4-14c,4 alpha-3h ] and [ 4-14c,4 beta-3h ] cholesterol into 20-hydroxyecdysone in fifth-instar larvae and into ecdysteroid conjugates in ovaries of maturing adult females .
C0013495
20-hydroxyecdysone
C0058915
ecdysteroid