I see... I've never hear of the "istologic decay". I have heard of HCG causing "leydig cell desensitization" when mega dosing with HCG. Perhaps "istologic decay" is just another term for that...
Thats why peeps shouldn't use more then 500iu twice a week or 250iu EOD of HCG so leydig cell desensitization doesnt happen.
The guys that try to "Shock" their testes when using HCG in PCT at 1000iu+ at one time are doing more harm then good...