HSP70s are strong anti-apoptotic proteins which can prevent apoptosis from different stresses, such as heat shock (Durairajanayagam, Agarwal & Ong, 2015), oxidative stress (Ikwegbue et al., 2017), infection (Mays et al., 2019), etc. We applied heat stress to test the anti-apoptotic ability of HSPA1L in testis. The gene discussed is HSPA1L; the disease is infection.