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Organ (biology)
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Collection of tissues with similar functions
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In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which has a specific...

Instance of
class of anatomical entity
Subclass of
particular anatomical entity
Part of
Organism
Different from
Governing body
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