Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.
单一性疏松瘤,
生
疣,是一个
耳道较少见
病灶。
Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.
单一性疏松瘤,
生
疣,是一个
耳道较少见
病灶。
Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.
造血-髓位于长
髓腔和松质
间隙内,
髓通过造血作用产生血细胞。
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