A. The 'window' period for HIV infection describes the strong immune defense that reduces the number of viral particles in the blood stream, marking the start of the infection's clinical latency stage. Clinical latency can vary between two weeks and 20 years. During this early phase of infect...
The endogenous syntheses of (PGI 2) and DNA were negatively correlated. These results suggest that PGI 2 inhibits DNA synthesis by acting on the progression stage of the G 1 state. 展开 关键词: Atherosclerosis Smooth muscle cells Cell proliferation Prostaglandin I 2 Cell cycle ...
Formation of rRNA was slow in all stages and it was first observed when a 2-h pulse with [ 3H]uridine was followed by a 6-h chase. A very low RNA synthetic rate was observed in the stage containing the meiotic reduction divisions. The function of the meiotic RNA in regulation of ...
Cell Cycle Phases | Interphase, Cell Division & Diagrams from Chapter 8 / Lesson 3 191K Understand the cell cycle phases. See descriptions of each stage of mitosis and understand what happens during interphase. Learn the importance of cell division. Related...
As the starting point for peptide elongation, the D-Asp residue in the cycle was chosen on the basis of the following advantages: (i) possibility of carrying out macrolactamization in both solid phase and solution; (ii) ester bond construction at a later stage of the peptide synthesis; (...
the imbalanced distribution of experimental synthesis data. Another common source of material data, first-principles calculations, however, usually exhibit a large gap with actual experiments. Due to the discards of several factors impacting the synthesis stage, such as experimental conditions and ...
However, a number of chemicals, including methyl methane sulfonate and ethyl-methane sulfonate, do gain access to the adluminal germ cells and produce genetic damage in the mid-to late stage spermatids of mice, resulting in pre-and postimplantation loss. In addition, paternal chronic exposure to...
Nuclei were isolated from developing sea urchin embryos from 4- to 600-cell stages, and the tr... JA Uzman,FH Wilt - 《Developmental Biology》 被引量: 9发表: 1984年 Replication timing: histone genes replicate during early S phase in cleavage-stage embryos of sea urchin Newly synthesized ...
(Figure 1). During the initiation stage ofprotein synthesis, the30Sribosomal subunit binds the mRNA and the initiatortRNA(formyl-methionine-tRNAfMet) with the help of initiation factors 1, 2, and 3 (IF1, IF2, and IF3) (reviewed inBoelens and Gualerzi, 2002). The initiator tRNA binds ...
7a, Stage 6). This exquisite collaboration between the RNA template sequence and the zipper head residue indicates that these unique telomerase elements might had coevolved to ensure an efficient RAP in telomere synthesis since the early stage of eukaryotic evolution. Another salient feature of the ...