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Biology - AQA GCSE

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Pregunta:

Embryonic and Adult Stem cells

Autor: Miqdaam Hamed Hassan



Respuesta:

EMBRYONIC STEM CELLS: 1) An embryo develops from a fertilised egg (at the early stage of development the cells in the embryo are stem cells) 2) Cells are then removed from the embryo - Embryonic stem cells (they'll differentiate into any type of cell 3) Difficult to obtain and raise ethical challenges ADULT STEM CELLS: 1) Found in: brain, eyes, blood, heart, liver, bone marrow, skin and muscle 2) Can only differentiate into related cell types (e.g. bone marrow cells can differentiate into blood cells and cells of the immune system) (3) Use patients own stem cells, therefore they're genetically identical and less likely to get rejected


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