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Cells in Biological Dictionary

Yolk plug

... Yolk plug is the remaining patch of endodermal cells that is created during the formation of the ... blastopore. It is a patch of large endodermal cells which remains exposed on the vegetal surface of ... search ... The large edible endothermal cells surrounded by the blastopore of an ... ... ...

Xylem

... Phloem ... Sap is a fluid transported in xylem cells or phloem sieve tube elements of a plant. ...... , phloem, parenchyma, and cambium cells. ... cells also occur within the xylem and phloem of ... comprise a vertical chain of lengthened, dead cells known as vessel elements. ... xylem is an ...

White blood cells

... White blood cells (WBCs), or leukocytes, are cells of the immune system defending the body ... but they are all ... White Blood cells is the third album by the American garage rock ...

Vessel cell

... ( in lower vascular plant (biology): cells of the vascular system ) ... walls ... vessel ... non-Tin expressing cell (those cells of the dorsal vessel lacking black nuclei) ... precursors. ... It is believed that stem cells have the potential to be any cell in the body. ...

Vascular cambium

... ... i.e. a vascular cambium that produces cells on ... xylem produced by the vascular ... the plant (root and ... Vascular cambium cells are of two types (Crang and Vassilyev): fusiform ... As the vascular cambium adds new xylem cells toward the inside of the stem and ... Growth ...

Vacuoles

... which is present in all plant and fungal cells and some protist, animal and bacterial cells. ... dictionary ... Vacuoles are found in the cells of plants, protists, and some primitive animals. ... . The term means "empty space" ... Plant cells have very large distinct vacuoles . ... The ...

Vacuole

... which is present in all plant and fungal cells and some protist, animal and bacterial cells. ... which is present in all plant and fungal cells ... The Major Role of the Rab Ypt7p in Vacuole ... vacuole (vky-l) ... Vacuoles are found in the cells of plants, protists, ... Vacuole - ...

Upper epidermis

... The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and ... upper or outer layer of the two main layers of cells that make up ... Epidermis (botany) ... Upper epidermis . This is a single layer of cells containing few or no chloroplasts. ... of the ...

Typhlosole

... emanates from a lamina of mesenchymal cells located between the ... The typhlosole ... ... Transcripts from Lymphocyte-Like cells in the Typhlosole and Kidney. Typhlosole and kidney lymphocyte-like cells were isolated on the basis of light ... ...

Tumor

... or lesion formed by an abnormal growth of cells . Tumor is not synonymous with cancer. A ... from uncontrolled, progressive multiplication of cells and serving no physiological function; a More ... are associated with a malignancy. ... As tumor cells grow and multiply, some of their substances can ...

Trophoblast

... trophoblast ( ) n. The outermost layer of cells of the blastocyst that attaches the fertilized ... ' trophoblast tumorigenesis' ... Trophoblast cells of the human placenta proliferate, migrate, ... /tro·pho·blast/ (tro'fo-blast) the peripheral cells of the ... The trophoblast ...

Transient transfection

... the process of introducing nucleic acids into cells by non-viral methods. The term ... GFP expression, we have been putting the cells at Room Temp on a ... transfection n. ... nucleic acid, ... Transfection of animal cells typically involves opening transient pores or ...

Transformed phenotype

... . ... ... alter the phenotype of 3T3 cells transformed by an ... autocrine loops ... Phenotype of Human Hepatocellular Carcinoma cells ... autocrine loop that contributes to the ... phenotype by Krev-1 is stable when cells ... 3 and PEA3 expression and the transformed ...

Transferrin receptor

... transferrin receptor in blood. When body cells are low in iron, the body produces more ... Transferrin Receptor Down-regulation in K562 cells in Response to ... in stimulated K562 cells, ... receptor expression by neuromelanin cells in restless legs ... The official name of ...

Transfection

... the process of introducing nucleic acids into cells by non-viral methods. The term ... transfection system contains ... Some cells exhibit similar transfection efficiencies with ... discussion topics ... Transfection of animal cells typically involves opening transient pores or ' ....

Tracheids

... Tracheids are elongated cells in the xylem of vascular plants that serve ... of Blechnum brasiliense stem tracheids . ... cells intermediate between tracheids and vessel ... the theoretical ... Both of these types of cells evolved from tracheids . ... Fibres, too, are ...

Tissue

... organizational level intermediate between cells and a complete organism. Hence, a tissue is an ... definitions ... Connective tissue consists of cells that make up fibers in the framework ... ... with ... Connective tissue . Human tissue . cells tissues ... Nervous tissue . Organ system ...

Thrombocytes

... Thrombocytes are cells that play a key role in blood clotting. In ... innate immunity ... leukocytes (white blood cells or WBCs), and thrombocytes (platelets) ... ... (or thrombocytes ), are the smallest of the cells in the blood. ... Of platelets ( ...

T lymphocytes

... T cells belong to a group of white blood cells known as lymphocytes , and play a central role ... from other lymphocyte types, such as B cells and natural killer ...

T cell

... T cells belong to a group of white blood cells known as lymphocytes, and play a central role in ... from other lymphocyte types, such as B cells and natural killer ...

Synergid

... micropyle and penetrates one of the sterile cells on either side of the egg (synergids). These ... begin to degenerate ... Synergid cells are two specialized cells that lie adjacent to the egg cell in ... The ...

Syncytium

... with cytoplasm containing many nuclei. Most cells in all organisms have a single nucleus; syncytia ... cytoplasm that is not separated into individual cells ... cardiac muscle work as a functional ... syncytium is a network of cardiac muscle cells connected by gap ... In sum, cardiac muscle is ...

Subsidiary cells

... The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and ...... ... but they are protected by subsidiary cells that have papillae that arch across ... the epidermis cells , even inside the depression formed by the ...

Sterile cell

... abbreviations ... prothallial cell Sterile cells present in the pollen ... ... analysis and ... 10% glycerol are required for manipulating the cells from a ... Find products and compare prices ... In homozygous sterile plants, pollen mother cells abort prior to completing meiosis (Figs. ... ...

Stem

... of the age of the ... Mesenchymal stem cells can produce such tissue types as bone, cartilage, ... The question of stem cells is currently the dominant subject in the debate over ... Embryonic stem cells are taken from a developing embryo at the ...

Stem cell

... Stem cells are cells found in most, if not all, multi-cellular ... of specialized cell ... Embryonic stem cells (ES cells) are stem ...

Spongy mesophyll

... [edit] Mesophyll . Palisade cells. Spongy cells ... vascular tissue of the leaf and are ... arranged, chloroplast-bearing, usually lobed cells ... between the spongy mesophyll cells are important? ... mesophyll n. The ...

Spermatogonia

... cell, 6 Myofibroblasts, ... The stem cells involved are called spermatogonia and are a ... mitosis to produce diploid intermediate cells ... Information about spermatogonia in the ... differentiate from primordial germ cells and are ... spermatogonia . Definition from ...

Spermatid

... spermatid n. Any of the four haploid cells formed by meiosis in a male organism that ... treatments, and other ... Spermatid : Male germ cells derived from the haploid ... Information ... cannot be identified for in ... round spermatid cells is one ... Norway rat protein-coding gene ...

Sperm cells

... sperma and refers to the male reproductive cells . In the types of sexual reproduction known ... set of chromosomes, ... Because sperm cells are haploid, they contribute half of the genetic information ... Sperm cells were first observed by a student of Anton van ...

Somatic hypermutation

... hypermutation (or SHM) is a mechanism inside cells that is part of the way the immune system ... hypermutation (or SHM ) is a mechanism inside cells that is part of the way the immune system ... somatic hypermutation in fibroblasts cells (Science ... Somatic hypermutation of ...

Somatic cells

... Somatic cells are any cells forming the body of an organism, as opposed to germline cells . In mammals, germline ...

Somatic cell

... Somatic cells are any cells forming the body of an organism, as opposed to germline cells. In mammals, germline cells are the spermatozoa and ova which fuse during ...

Somatic

... The term somatic refers to cells of the body, rather than gametes (eggs or sperm). In humans, somatic cells contain two copies of each chromosome ... chromosome (haploid). Although all somatic cells of an individual are genetically identical in ...

Smooth muscle

... The myofibrils of smooth muscle cells are not arranged into sarcomeres. ... In ... organ, from ... 6) How are smooth muscle cells structured to sustain the long wave like ... it is involuntary. ... Smooth muscle cells contain one centrally placed nucleus. ... The ...

Skin cell

... Skin has mesodermal cells , pigmentation, or melanin, provided by ... melanin cells. Skin ... The modified skin cells added to cultured skin substitutes might fight ... ... properly in the skin , dividing cells are protected from ... A four-minute short ...

Skeletal muscle

... layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each ... 3 Red and white fibers ... Skeletal muscle cells are stimulated by acetylcholine, which is ... to its length and cross ... Skeletal muscle cells are stimulated by acetylcholine, which is ...

Sieve tubes

... tube members, are a type of elongated parenchyma cells in phloem tissue. At the ends these cells are connected with other sieve elements, and ... element? ... sieve tube tube formed by cells joined end-to-end through which nutrients flow ...

Sex cells

... Germ cells are progenitors of the gametes. These singled-out cells move through the gut to the developing gonads ... in ... sex cell n. A germ ... Sex cells have only half the number of chromosomes that ...

Seminiferous tubules

... tubules—coiled tubes, the walls of which contain cells ... At the forefront of medicine, Gene ... are found in each lobule, and interstitial cells ... The seminiferous tubules are the ... f 1 ... Intracellular potentials in cells of the seminiferous tubules of rats. J ...
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