callus

英 [ˈkæləs]

美 [ˈkæləs]

n.  胼胝，老茧(手、足上的硬皮)

现在分词：callusing　过去式：callused　第三人称单数：calluses　过去分词：callused　

GRE医学

COCA.33141

牛津词典

noun

• 胼胝，老茧（手、足上的硬皮）
  an area of thick hard skin on a hand or foot, usually caused by rubbing

柯林斯词典

• 胼胝;老茧;硬结
  Acallusis an unwanted area of thick skin, usually on the palms of your hands or the soles of your feet, which has been caused by something rubbing against it.

英英释义

noun

• (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
• bony tissue formed during the healing of a fractured bone
• an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
  Synonym:callosity

verb

• form a callus or calluses
  1. His foot callused
• cause a callus to form on
  1. The long march had callused his feet

双语例句

• At the same time, carbenicillin and cefotaxime showed positive effect on regeneration of callus.
  同时发现，羧卞青霉素与头孢霉素均对愈伤组织的分化有促进作用。
• Using stems and young leaves of Rubus biflorus as explants, this paper researched the effect on inducing callus, budlets and roots and plantlet regeneration of different concentration hormone.
  利用粉枝莓的茎段和幼嫩叶片作为外植体，研究了不同激素水平对诱导产生愈伤组织、芽和根，完成植株再生的影响。
• Carbon source, nitrogen source and plant hormone had the obvious effects on the callus growth and flavonoids production.
  碳源、氮源、植物激素对愈伤组织生长和黄酮类形成影响较为显著。
• The effect of inducing callus by selecting epicotyl as explant was better than other explants.
  选用上胚轴为外植体的愈伤组织发生效果较其他外植体好；
• Factors affecting induction of callus in Mikania micrantha Kunth were studied in the paper.
  对影响微甘菊愈伤组织诱导的因素进行了系统研究。
• There was no significant correlation between callus induction and plant regeneration.
  愈伤组织诱导率和分化率之间无显著相关性。
• Effects of 2,4-D and 6-BA on Callus Initiation and Plantlet Regeneration from Mature Embryos of Indica Rice
  2,4-D和6-BA对籼稻成熟胚愈伤组织诱导和植株再生的影响
• Druce. Result: Flower can regenerate plante by callus, while rhizome can regenerate adventitious bud directly.
  结果：花通过愈伤组织可形成再生植株，根状茎可直接分化出不定芽。
• Induction of callus and regeneration of Plantlets in cotyledon and hypocotyl segment culture of Chinese gooseberry
  猕猴桃离体子叶、下胚轴愈伤组织诱导和植株再生
• Study on the Sucrose Metabolism in Embryogenic Callus of Occurrence Process of Picea Mongolica
  沙地云杉胚性愈伤组织发生过程中蔗糖代谢的研究