When trypsin reacts with Herring sperm DNA (hsDNA), Salmon sperm DNA (sDNA), and Calf thymus DNA (ctDNA) to form a complex, the resonance Rayleigh scattering (RRS) was remarkably enhanced and new RRS spectra appear.
No cortical alveoli were found below the micropylar tube where sperm enters the ovum, which suggests that the cortical reaction prevents polyspermy.
Structural and parameterized models for generalized description of the images of normal and pathologically changed cells of blood and sperm were presented by way of example.
The results show that quantitative and morphohistological trends in the development of sperm cells and Sertoli cells in both lines are similar in both lines.
Mechanism of Oxidation of Oxymyoglobin by Copper Ions: Comparison of Sperm Whale, Horse, and Pig Myoglobins
At the same optical density of DNA, the sizes of mature spermatozoon heads in triploid males were, on average, 1.8 times smaller than in diploid males, as follows from the data obtained in summer 1996.
The results of similar studies carried out during the period of natural spawning activity in 1997-1999 suggest that the sizes of spermatozoon heads in triploid males were, on the contrary, 1.5 those in diploid males.
Triploid males were characterized by mosaicism of spermatozoon sizes and chromosome mosaicism in somatic cells.
We hypothesize that the increase in the number of endosymbionts during spermatid elongation can affect the chromatin condensation in the spermatozoon.
Difficulties in characterization of spermatozoa of the Metazoa are now related to insufficiency of the traditional terms "primitive spermatozoon," "modified spermatozoon," and "aberrant spermatozoon" introduced by G.