Stem

Stem cells are primal undifferentiated cells that retain the ability to divide and differentiate into other cell types. In higher plants this function is the defining property of the meristematic cells.
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Stem cell
[L. cella - compartment]. An undifferentiated cell that is mitotically active in either replacing dying body cells (somatic stem cell) or producing gametes (germinal stem cell).
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Stem Cells
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Types of Stem Cells
Using Stem Cells for Human Therapy - The Dream ...
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A lollipop-shaped structure formed when a single-stranded nucleic acid molecule loops back on itself to form a complementary double helix (stem) topped by a loop.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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Stem cells can be found in all adult and young adult beings. Adult stem cells are undifferentiated cells that reproduce daily to provide certain specialized cells-for example 200 billion red blood cells are created each day in the body from ...
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Dr. Donald Orlic, of the National Human Genome Research Institute's Genetics and Molecular Biology Branch, defines hematopoietic stem cell.
related
terms:
cell ...
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Stem Cells
Certainly some plant cells, like the totipotent meristems, are more versatile than animal cells.
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Stem vascular arrangement -- Vascular tissue occurs in long strands called vascular bundles. These bundles are arranged within the stem of dicots to form a cylinder, appearing as a ring of spots when you cut across the stem.
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Stem Cells
Therapeutic cloning, also called "embryo cloning" or "cloning for biomedical research," is the production of human embryos for use in research.
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stem
The aboveground part of the axis of vascular plants, as well as anatomically similar portions below ground (such as rhizomes).
stem cells ...
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stem cells Cells in bone marrow that produce lymphocytes by mitotic division.
sternum The breastbone.
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STEM-LOOP - A feature of RNA secondary structure, in which two complementary, inverted sequences which are separated by a short-intervening sequence within a single strand of RNA base pair to form a '"stem" with a "loop" at one end.
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stem
The part of the plant bearing the buds, leaves, and flowers. It forms the central axis of the plant, and provides mechanical support. If present below ground, it is usually called a rhizome.
Covered in: ...
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malacca - stem of the rattan palm used for making canes and umbrella handles
2.
malacca - a cane made from the stem of a rattan palm ...
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cladophyll A stem or branch that resembles a leaf.
clamp Complex set of sclerotized bars, forming a "pinching" organ on the opisthaptor of a monogenetic trematode.
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peduncle. The stem of an individual flower or fruit.
peg roots. Primary roots.
pellicle. The covering (skin) that encloses the kernel; it is white during development but becomes brown at maturity.
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a germ cell in the stem line of male germ cells that divide mitotically before entering meiosis
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
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The marsupials and placentals diverged from a pantotheran stem stock in the late Cretaceous. The first marsupials appeared in North America approximately 80 million years ago, e.g.
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Many fundamental genetic concepts stem from G. Mendel's work on pea genetics. Mendel's first law gave rise to the concept of recessive and dominant markers.
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embryonic or other stem cells) capable of giving rise to all cell types of the embryo, but not extraembryonic tissues (derivatives of trophoblast) are called 'pluripotent.
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This laborious method involves transfecting a crippled gene into cultured embryonic stem cells, searching through the thousands of resulting clones for one in which the crippled gene exactly replaced the normal one (by homologous recombination), ...
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This suffix indicates the complete collection of the subunits described in the word stem.
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pith: the structure at the center of the stem of vascular plants.
pituitary gland: a gland at the base of the brain consisting of the anterior and posterior lobes that secretes several hormones.
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There are two loci illustrated below, one is for flower color and the other is for stem length. Flower color has five alleles and stem length has two.
Practice
Crosses ...
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Pedicel the region of a plant stem below the receptacle (below a flower)
(ped pediculus = foot)
PelagicZone the open water in the ocean
(pelago = the sea) ...
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: A loop of nucleic acid formed by duplex formation within a single strand (also called stem loop). If happens in a PCR primer, it will not function.
Haploid number ...
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In plants, a propagule is whatever structure functions to reproduce the species: a seed, spore, stem or root cutting, etc.
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