callus

n.

老茧，假骨质；愈合组织；

vi.

结硬皮，生老茧，结痂；

vt.

使生茧（或变硬），使（伤口等）结痂；

复数：calluses

1. I walked to him and took his outstretched hand which was rough with callus.
   我走向他，握起他那长满老茧的手。
2. We have tried treatment, but the position of the callus revealed by the scan needed surgery.
   我们尝试过药物治疗，但扫描显示，老茧的位置需要进行手术。

1. Heavy work callused his hands.
   繁重的劳动使他的双手生出茧子来。

Embryogenic callus and cell suspension of inbred corn
Callus induction and root regeneration in gerbera (Gerbera jamesonii).
Limb lengthening by callus distraction (callotasis).
Bone lengthening in rabbits by callus distraction. The role of periosteum and endosteum
The production of callus capable of plant regeneration from immature embryos of numerous Zea mays genotypes
Early histological and ultrastructural changes in medullary fracture callus.
Establishment and maintenance of a friable embryogenic Maize callus and involvement of L-proline
Establishment and maintenance of friable, embryogenic maize callus and the involvement of L -proline
The effect of parental genotype on initiation of embryogenic callus from elite maize (Zea mays L.) germplasm
Herbicide Resistant Fertile Transgenic Wheat Plants Obtained by Microprojectile Bombardment of Regenerable Embryogenic Callus.