Many researches suggested that antitumor chemotherapeutics have circadian rhythmicity.

大量研究表明抗肿瘤化疗药物具有昼夜节律性。

It had not effects on the excitability, automaticity and rhythmicity, refractory period.

而对其兴奋性、自律性、不应期无明显影响。

Objective: To investigate whether the tissues of the left ventricular outflow tract in rats had spontaneous rhythmicity or not.

目的：为了观察大鼠左心室流出道组织是否具有自动节律性。

Melatonin (MT) is secreted by the pineal gland and has obvious biological rhythmicity including circadian, season rhythm and life rhythm (aging clock).

褪黑素(MT)由松果腺分泌，具有明显的生物节律性，包括昼夜节律、季节节律和生命周期节律。

Objective To investigate the effects of glucocorticoids and insulin on serum leptin level and its diurnal rhythmicity in patients with Cushing's syndrome and obesity as well as in normal subjects.

目的了解在库欣综合征病人、肥胖症者及正常人体内糖皮质激素、胰岛素对瘦素及其昼夜节律的影响。