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What are the 4 types of stem cells?


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Types of stem cells:

Embryonic Stem Cells:

  1. Human blastocysts, an early stage of the growing embryo lasting from the fourth to the seventh day after conception, include embryonic stem cells (ESCs) in the inner cell mass.
  2. They vanish after the seventh day and start to form the three layers of embryonic tissue in normal development.

Adult Stem Cells:

  1. Adult stem cells also referred to as somatic stem cells or tissue stem cells, are a rare type of cell population that is present in the body for the majority of postnatal life.
  2. Adult stem cells can differentiate into a small number of different mature cell types that help to build the tissue in which they are found.

Induced Pluripotent Stem Cells:

  1. A form of pluripotent stem cell produced from adult somatic cells is known as induced pluripotent stem (iPS) cells.
  2. Through the induction of genes and other stimuli, they have been reprogrammed to be pluripotent. In many ways, iPS cells and embryonic stem (ES) cells are comparable.

Mesenchymal stem cells:

  1. Stem cells have two features: the ability to differentiate along different lineages and the ability of self-renewal.
  2. Two major types of stem cells have been described, namely, embryonic stem cells and adult stem cells.

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