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Jyotsna Dhawan is an Indian Cell and Developmental Biologist, Emeritus Scientist at Centre for Cellular and Molecular Biology [1] [2] and Visiting Professor, Institute for Stem Cell Science and Regenerative Medicine (inStem). [1] [3] Dhawan's research has focused on adult stem cell function and skeletal muscle regeneration.
Stem cell markers are genes and their protein products used by scientists to isolate and identify stem cells.Stem cells can also be identified by functional assays. Below is a list of genes/protein products that can be used to identify various types of stem cells, or functional assays that do the same. [1]
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
The stromal cell-derived factor 1 (SDF-1), also known as C-X-C motif chemokine 12 (CXCL12), is a chemokine protein that in humans is encoded by the CXCL12 gene on chromosome 10. [5] It is ubiquitously expressed in many tissues and cell types. [ 6 ]
Placing fossils in their right order in a stem group allows the order of these acquisitions to be established, and thus the ecological and functional setting of the evolution of the major features of the group in question. Stem groups thus offer a route to integrate unique palaeontological data into questions of the evolution of living organisms.
Antennopoda was defined by De Haro, where Tardigrada was not included in his tree. [1] In a subsequent article of him, his use of Antennopoda was inconsistent with the current usage. [ 5 ] Especially the position of the Tardigrada is disputed, the alternative hypothesis of Tactopoda includes tardigrades and arthropods as the sister group to ...
In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. [1] The cortex is composed mostly of large thin-walled parenchyma cells of the ground tissue system and shows little to no structural differentiation. [ 2 ]