锐齿栎林单叶面积和干重的季节生长呈不同的 S型曲线 ,叶面积叶干重比的季节变化呈不完全 S型。叶从萌动到落叶持续约 1 60 d,展叶第 1周 ,叶重量绝对增长快于叶面积的增加 ,之后相反。叶季节变化表现为叶面积增长迅速且持续时间较短 ,叶重量增加相对缓慢且持续时间较长。刚展叶时 N、P、K含量很高 ,展叶期明显下降 ,落叶前最低 ,Ca含量季节变化则相反 ;Mg含量展叶期较高 ,之后逐渐下降且趋
目的探讨常年性变应性鼻炎(PAR)患者中可溶性白介素-2受体(sIL-2R)的表达水平.方法选择确诊为PAR者47例为PAR组,正常体检者36例为对照组.应用单抗、多抗双抗体夹心法检测sIL-
The differential diagnosis between hepatocellular carcinoma (HCC) and regenerative liver nodules and other primary liver tumors may be very difficult, particula
AIM: To investigate the efficacy of a high-potency probiotic preparation on prevention of radiation-induced diarrhea in cancer patients.METHODS: This was a doub
We present a case of fetal liver failure caused by the activation of lamivudine-resistant hepatitis B virus (HBV) nine months after lamivudine treatment. A 57-y
AIM: To explore the effects of H pylori infection on gap-junctional intercellular communication (GJIC) and proliferation of gastric epithelial cells in vitro. M
AIM: To evaluate the ability of the time-signal intensity curve (TIC) of the pancreas obtained from dynamic contrast-enhanced magnetic resonance imaging (MRI) f
Natural killer (NK) cells are bone marrow derived,large granular lymphocytes, comprising approximately 10% to 20% of the mononuclear cell fraction in normal per
A monolithic molecularly imprinted polymer with specific recognition ability for 4-hydroxybenzoic acid (4-HBA) was prepared by in situ photopolymerization, usin
AIM: To investigate the multicellular resistance of human hepatocellular carcinoma HepG2 cells in three-dimensional culture to delisheng, 5-fluorouracil and adr