. "\"A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.\" [ISBN:0198506732]" . . "mitochondrion" . "mitochondria" . "NIF_Subcellular:sao1860313010" . "Wikipedia:Mitochondrion" . . .