4.4. How far does a human sperm cell travel to fertilize an egg? 4.5. How fast can a sperm travel? 4.6. Why does the human sperm cell have lots of mitochondria? 4.7. What is the function of the head of the sperm? 4.8. What is the probability that a human sperm cell carries an ...
as the testicles make sperm nonstop. However, new sperm need time to mature before they’re ready to do their job of fertilizing an egg. That can take more than 10 weeks. While they wait to mature, young sperm get moved along to another tube on the back of the testicles, known as ...
Similar ratio of H3 to H4, and decreased level H2B to H4 are detected in subnucleosomes compared with nucleosomes. Xenopus sperm and mESCs are shown as control. Graphs below show the quantification of WB data (n = 2, biologically independent samples). f Model of core histone ...
Considering that Ribo-seq, similar to other short-read sequencing methods, also does not maintain transcript integrity, we further narrowed down our analysis to isoforms that include novel exon sequences that contribute to coding regions compared to the annotated RefSeq. We found that RPFs distribute...
Signal transduction in the activation of spermatozoa compared to other signaling pathways: a biological networks study Int J Data Min Bioinform (2014) [in press] Google Scholar [94] Y. Hu, J. Trousdale, K. Josić, E. Shea-Brown Local paths to global coherence: cutting networks down to s...
We compared the transplantation efficiencies of frozen germ cells with those of freshly prepared germ cells to determine whether germ cells frozen for 33 days (Fig. 1A–D) maintained stem cell potency. Recipients were dissected at 20 and 50 dpt, and PKH26-labeled donor cells were examined. Alt...
1b), providing the means to test the predictions from Eq. (4). We determined the phase (ϕ) and amplitude (C 2) of the second harmonic from the spectrogram of the flagellar curvature (Methods and Supplementary Fig. 3) and compared the second-harmonic intensity with the rotation velocity...
11. A recombinant non-mammalian mRNA encoding PLC-zeta protein, capable of generating cytoplasmic calcium oscillations (CCOs) when introduced into a non-mammalian egg. 12. A method for the preparation of a polypeptide or protein according to any of claims 3 to 8 and 10, which method compris...
Arrows indicate the egg nucleus and arrowheads indicate the first polar-body. Full size image The second polar body extrusion in the fertilized eggs Moreover, we used the same whole-mount triple fluorescence localization to label the second meiosis completion process in the fertilized eggs. As ...
CELL WALL ELASTICITYEvolutionary games of sperm competition in which two males mate with the same female have previously considered sperm size to be fixed at some (small) constant level. Although male gametes in multicellular organisms are typically small compared with ova, they vary greatly both ...