Callus

Callus

1. (Science: botany) undifferentiated plant tissue produced at wound edge callus tissue can be grown in vitro and induced to differentiate by varying the ratio of the hormones auxin and cytokinin in the medium.

2. (Science: pathology) mass of new bony trabeculae and cartilaginous tissue formed by osteoblasts early in the healing of a bone fracture.

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