But in our study, we had used Ca2+ free phosphate buffer solution as the medium. Lead is reported to inhibit voltage-gated calcium channels in neuron cells and competes with calcium uptake [63]. Therefore, possibility of reduced intracellular calcium levels in lead-exposed sperms due to ...
Percent HOS-positive spermatozoa at different time intervals following in-vitro exposure of semen samples to different concentrations of lead acetate (0.5–20 ppm). Spermatozoa showing HOS-positive response (curled tail) and HOS-negative response (no curling of tail) Full size image Table 1 Effect ...
The zig-zag structure can be correlated to a curling structure, typically evolving for bcc-iron deformed by wire drawing19,20. For the low deformed state, Fig, 3c, the local smooth surface features combined with the zig-zag structure suggest that the crack follows the lamellar alignment ...
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The term “substantially free,” when used to describe the concentration and/or absence of a particular constituent component in a glass composition, means that the constituent component is not intentionally added to the glass composition. However, the glass composition may contain traces of the cons...