Báo cáo y học: "On the origin of neurons" doc

... on the role of Pax6 in embryonic and adult rat neurogenesis in a study of the func- tion of one of its downstream genes, FABP7, which they identified by microarray analysis. FABP7 is a fatty-acid- binding ... already acquire laminar fate information in the ventricular zone or whether they need to reach the mar- ginal zone to acquire their laminar fate identity. Kazunori Nakaji...

Ngày tải lên: 14/08/2014, 07:22

... teaches us a number of important lessons about the evolution of gene regulation. One is that, at least in the case of Hox genes, the inherent asymmetry in the physical arrangement of the genes leads ... a pattern of correlated morphological variation in the evolution of elements of the forelimbs of the Anthropoidea (the monkeys, a group showing plenty of ev...

Ngày tải lên: 14/08/2014, 08:20

... of endocytosis and gp41-mediated death. Assuming that the endocytosis of HIV particles is the main mecha- nism of HIV transfer in primary CD4 T cells and according to the recent report by Miyauchi ... particles, they support early events of HIV infection that can be measured by quantifying the amount of newly synthesized HIV DNA by real-time PCR [14,21]. The comparison of...

Ngày tải lên: 12/08/2014, 23:22

... sample of the mosaicism originally present throughout the early embryo. To the contrary, if the correlation between somatic and germline mosaicism is weak, the number of FGCs must be limited and the ... excluded from the analysis. The solid line represents the expected number of oocytes at each age in the postembryonic stages based on the model given these data....

Ngày tải lên: 13/08/2014, 23:20

... sterility or hybrid inviability [2-6]. Hot on the heels of these landmark Drosophila studies are a suite of related analyses of speciation in a newer but increas- ingly developed wave of model systems, ... availability of genomic tools, techniques, and data, especially in the model speciation systems such as Drosophila. The resulting con- temporary studies of the genetics...

Ngày tải lên: 14/08/2014, 14:21

... modification of appropriate tRNAs and the aminoacyl-tRNA synthetase mol- ecules that charge them (see [29] and references therein). Most directly of all, the discovery of a 22nd encoded amino acid, pyrrolysine, ... selenocysteine aminoacyl-tRNA synthetase that charges an appropriate tRNA; rather, serine aminoacyl- tRNA synthetase charges tRNA Sec with (canonical) serine [25]. Enzym...

Ngày tải lên: 14/08/2014, 16:20

... two-tail). Contribution of the length of the main ORF versus the presence of uORFs to the translation state of mRNAsFigure 10 Contribution of the length of the main ORF versus the presence of uORFs to the translation ... until it encounters the main AUG codon. Thereby the efficiency of re-initiation can control the effi- ciency of initiation at the m...

Ngày tải lên: 14/08/2014, 20:22

... property of closed off discourses (or discourse units). Let me explain the unique verification in view of the following examples: (26) a I spoke to two students yesterday. They thought the ... were friends of mine. I know exactly two Spanish people. They live in my street. I know exactly two people in my street. They're Spanish. Both the non-restrictive clause and...

Ngày tải lên: 09/03/2014, 01:20

... the content of secondary structure only after the disruption of the native tertiary structure of RNase A (Figs 2–4). Interestingly, the preservation of the tertiary structure coincides with the ... hydro- chloride (GdnHCl), urea or elevated temperatures, they destroy the tertiary structure of proteins which results in the loss of enzymatic activity. Regarding the...

Ngày tải lên: 22/02/2014, 07:20

... where the markedness theory is invoked. Induction follows the restrictions in the theory, where generalization is limited to one of the stated types. 176 Assume that the first input to the system ... language making use of po- sitive-only data, modelled on a theory of lexical seman- tics. This theory, the Eztende~t Aspect Calculus acts to- gether with a maxked...

Ngày tải lên: 24/03/2014, 02:20