"Histology is the microscopic study of how cells and tissues collaborate to form organs. It is the meeting ground where genetics, physiology, anatomy, biochemistry, and evolution come together. The processes of life do not just happen in a sack of biological soup bounded by a membrane. On a subcellular level the microstructures and organelles in every cell are arranged in a deliberate and intricate fashion that facilitates the molecular interactions necessary for life—arrangements plainly visible in every electron micrograph. The cells themselves are ordered into precise patterns forming tissues and organs providing specific frameworks and environments for life’s processes to happen. These frameworks are determined by the specific function of a tissue or organ—every function imposes a characteristic plan on the arrangement of the tissues and cells making up the organ." (McMillan & Harris)
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