Incomplete development of an organ or tissue. Congenital absence may be characteristic.
Lack of development of an organ or tissue, or of the cellular products from an organ or tissue.
The failure of an organ to develop resulting from congenital factors or disease in infancy.
A lack of growth of tissue.
The absence of an organ or tissue due to developmental failure. In aplastic anemia, there is a failure in the normal generation and development of blood cells.
The complete or partial failure of tissue or an organ to develop.
Failure of an organ or tissue to develop normally.
Aplasia refers to the absence or significant reduction in the growth and development of any organ or tissue. For instance, bone marrow aplasia involves a decreased rate of cell division in the bone marrow, resulting in insufficient production of blood cells. Certain birth defects, like stunted limbs (known as phocomelia), occur due to incomplete tissue formation during prenatal development, leading to impaired growth and development.
The innate absence or improper development of a tissue or organ.