What does pluripotent mean?
a. Ability of a single cell to develop into an embryonic or adult stem cell
b. Ability of a stem cell to develop into many different cell types
c. A cell without MHC I and MHC II antigens
d. Ability of a single stem cell to heal different types of diseases
e. Ability of an adult cell to become a stem cell

검증된 단계별 안내

Step 1: Understand the term 'pluripotent' in the context of stem cells. Pluripotent refers to the capability of a stem cell to differentiate into multiple, but not all, cell types.

Step 2: Recall the hierarchy of stem cell potency: totipotent (can form all cell types including extraembryonic), pluripotent (can form almost all cell types of the body), multipotent (can form a limited range of cells), and unipotent (can form only one cell type).

Step 3: Analyze each option in the question to see which best matches the definition of pluripotent. For example, option (b) mentions the ability of a stem cell to develop into many different cell types, which aligns with the concept of pluripotency.

Step 4: Eliminate options that do not relate to the differentiation potential of stem cells, such as those describing antigen presence (option c) or healing ability (option d).

Step 5: Conclude that the correct understanding of pluripotent is the ability of a stem cell to develop into many different cell types, which corresponds to option (b).

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주요 개념

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Pluripotency

Pluripotency refers to the ability of a stem cell to differentiate into almost all cell types of the body, excluding extra-embryonic tissues. Pluripotent stem cells can give rise to cells from all three germ layers: ectoderm, mesoderm, and endoderm, making them crucial in developmental biology and regenerative medicine.

Stem Cell Potency Hierarchy

Stem cells vary in potency, which describes their differentiation potential. Totipotent cells can form all cell types including extra-embryonic tissues, pluripotent cells can form nearly all body cells, multipotent cells differentiate into a limited range of cells, and unipotent cells produce only one cell type.

Major Histocompatibility Complex (MHC) Antigens

MHC I and MHC II are molecules on cell surfaces important for immune recognition. Cells lacking these antigens may evade immune detection but this characteristic is unrelated to pluripotency. Understanding MHC is essential in immunology and transplantation biology.