Figure 1
From: Triple touch sperm immobilization vs. single touch sperm immobilization in ICSI - a randomised trial
Sperm immobilization. (a) Standard procedure STIm : pressing the tip of the tail against the lid of the dish with a microinjection pipette until a clear small bend in the middle of the flagellum is visible (b) More aggressive procedure TTIm: based on application of the standard procedure twice and compression of the sperm mid-piece once.