The Elemental Composition of the Environments of the Gametes and Preimplantation Embryo During the Initiation of Pregnancy

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Abstract
Micropuncture and electron probe microanalysis were used to determine the concentrations of Na, Cl, K, Ca, Mg, S and P in picoliter volumes of fluid in the microenvironments of male and female gametes and zygotes in the female genital tract of the mouse.