A cell type is a distinct morphological or functional form of cell. When a cell switches state from one cell type to another, it undergoes cellular differentiation. Jump to: navigation, search Cells in culture, stained for keratin (red) and DNA (green) The cell is the structural and functional unit of all living organisms, sometimes called the building blocks of life. ... Cellular differentiation is a concept from developmental biology describing the process by which cells acquire a type. The morphology of a cell may change dramatically during differentiation, but the genetic material remains the same, with few exceptions. ...
A blastomere is the structure which results from the divisions of a fertilised egg during embryonic development . ... A human ovum An ovum (loosely, egg or egg cell) is a female sex cell or gamete. ... A fibroblast is a cell that makes the structural fibers and ground substance of connective tissue. ... An oocyte or ovocyte is a female gametocyte that divides twice by mitosis and meiosis into two other oocytes or into two ootids. ... An osteoblast (from the Greek words for bone and to build) is a mononucleate cell which produces a protein that produces osteoid. ... An osteoclast is a multinucleated cell that degrades and reabsorbs bone. ... Jump to: navigation, search The signifier sperm can refer to: (mass noun, from Greek sperma = seed) a substance which consists of spermatozoa and which is a component of semen (mass noun) semen itself (informally, count noun with plural sperm or sperms) a single spermatozoon (= sperm cell) sperma ceti (Latin ceti... Jump to: navigation, search A zygote (Greek: ζυγωτόν) is a cell that is the result of fertilization. ...
Collenchyma (Greek word meaning to increase) plant tissue is composed of elongated cells with unevenly thickened walls. ... Endodermis is the bottom layer of skin. ... Endosperm is a triploid tissue (containing three sets of chromosomes) found in the seeds of flowering plants. ... Epidermis could refer to: In plants, the outermost layer of cells covering the leaves and young parts of a plant, see plant dermal tissue system. ... Meristem is a type of embryonic tissue in plants consisting of unspecialized, youthful cells called meristematic cells and found in areas of the plant where growth is or will take place - the roots and shoots. ... Palisade cells can be found inside the leaf of a green plant. ... The parenchyma are the functional parts of an organ in the body (i. ... Sclerenchyma is a supporting tissue. ... Tracheids are long tubular cells in the wooden parts of plants. ... Jump to: navigation, search A zygote (Greek: ζυγωτόν) is a cell that is the result of fertilization. ...
The blastocyst is a sphere made up of an outer layer of cells (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass).
When it is used to refer to cells grown in a tissue culture dish, a clone is a line of cells that is genetically identical to the originating cell.
By combining a patient's somatic cell nucleus and an enucleated egg, a scientist may harvest embryonic stem cells from the resulting embryo that can be used to generate tissues that match a patient's body.
Embryonic stem cells are cultured cells obtained from the undifferentiated inner mass cells of a blastocyst, an early stage embryo that is 50 to 150 cells.
Embryonic stem cells are stem cells derived from the undifferentiated inner mass cells of a blastocyst, an early stage embryo consisting of 50-150 cells.
Embryonic stem cell researchers are currently attempting to grow the cells beyond the first stages of cell development, to overcome difficulties in host rejection of implanted stem cells, and to control the multiplying of implanted embryonic stem cells, which otherwise multiply uncontrollably, producing a tumor.
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