HSPA2 and Infertility: In this case- control study, semen samples of 20 infertile men, with TA (with normal morphology lower than 4%_ and total motility lower than 40% ) as the case group and 20 normozoospermic fertile men as the control group were evaluated for intracellular O2– and HSPA2 by flow cytometry and protamine deficiency by Chromomycin A3 (CMA3) test.