Why do we study tissues at a microscopic level when we are going to be working on living humans? (Anatomy question) For over 17 years a form of birth control called Vasalgel (r

Why do we study tissues at a microscopic level when we are going to be working on living humans? (Anatomy question)
For over 17 years a form of birth control called Vasalgel (risug) for men has been in the “trial” phase in India. This birth control has produced amazing results. Vasalgel is a medical grade gel that is injected into the vas deferens blocking the flow of sperm, like a vasectomy. If/when the male wants to end the birth control he can receive a second injection into the vas deferens that dissolves the gel. How might access to a safe form of birth control for men change reproductive health in the USA? (Ideas: Gender equity health gap, racial & ethical health disparities, reproductive health disparity) (Madical Terminology)