Effect of Light on Motility, Life-Span, and Respiration of Bovine Spermatozoa

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Science  11 Sep 1959:
Vol. 130, Issue 3376, pp. 624-625
DOI: 10.1126/science.130.3376.624


Exposure to light of bovine spermatozoa suspended in various media results in a progressive decline in metabolic activity followed by the premature death of the cells. The inhibitory and spermicidal effects of visible light resemble a photodynamic action; the photosensitizer is an intrinsic component of the cell.