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of human oocytes and spermatozoa in oviducts 20. Effect of light on eggs and embryos 21. Puzzles of seminal plasma and sperm competition 22. Similarity between spermatozoa and neurons 23. Intracytoplasmic ...
., 2005). The conserved histidine coupled with glutamic acid residues are oriented at the centre of the cavity and can directly complex with divalent cations , such as Zn2+, Mg2+ and Hg2+ (Henriksen et al ...
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