Nikolas
Created page with "''Written by ms. Worldwide, edited by Nikolas'' == Hypoplasia == Incomplete development or underdevelopment of an organ or tissue. == Aplasia == Aplasia refers to defective development of an organ or tissue beyond an early embryonic stage. As a result, the embryonic remnants of the organ are often present. == Agenesia == Agenesis refers to complete loss of an organ or part due to development never beginning in the embryonic stage. == Atrophy == Atrophy means that an..."