An bayyana cell Leydig a matsayin "kwayoyin polyhedral tare da babban tsakiya na vesicular da aka samo a cikin tsaka-tsakin nama na testis wanda ke ɓoye testosterone." a cikin tsaka-tsakin nama na gwangwani a cikin maza kuma suna da alhakin samarwa da ɓoye testosterone, wanda shine farkon hormone na jima'i. Wadannan kwayoyin halitta suna taka muhimmiyar rawa a cikin ilimin halittar jiki da ci gaban namiji.