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Comparative Effect of Photobiomodulation on Human Semen Samples Pre- and Post-Cryopreservation![]() The primary objective of this study is to evaluate and to compare the effects of photobiomodulation (PBM) on sperm parameters both before and after cryopreservation. In this regard, 24 freshly ejaculated semen samples from normozoospermic men were included in this study. Each semen sample was randomly divided into three groups (1 ml aliquot for each group): the control group (group one) underwent conventional sperm cryopreservation (n = 24), group two underwent pre-freezing PBM exposure (810 nm, diode laser, and 0.6 J/cm2) (n = 24), and group three underwent post freezing and thawing PBM exposure (n = 24).... | 11:44 - 2022/04/12 - Comments : ٠ | more ... >> |
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