The regeneration of Acer rubrum L. "October Glory" through embryonic callus.

Background: Tissue culture and rapid propagation technology is an important way to solve the difficulties of plant propagation. This experiment aims to explore the appropriate conditions at each stage of the red maple's tissue culture process and to obtain plantlets, thus providing a theoretical basis for the establishment of the red maple's tissue culture system.

Results: The results showed that the stem segment is the most suitable explant for inducing embryogenic callus.

Efficacy and tolerability of low-dose interferon-α in hemodialysis patients with chronic hepatitis C virus infection.

Aim: To evaluate the efficacy and tolerability of low-dose standard or pegylated interferon (PEG-IFN) in hepatitis C virus (HCV)-positive hemodialysis patients.

Methods: In total, 19 patients were enrolled in this study, of which 12 received PEG-IFNα-2a 67.5 μg 1 time/wk (Group 1) and 7 received standard interferon α-2b subcutaneously 1.

[An age-period-cohort modelling study on primary liver cancer incidence rate in Qidong].

Objective: To analyze the incidence trends of primary liver cancer (PLC) in Qidong.

Methods: Data of PLC incidence from 1975 to 1999 in Qidong were analyzed to delineate temporal trends and birth cohort patterns, using age-period-cohort models.

Results: Significant moderation or decreasing trends were began to notice in incidence rates on cohorts born in 1913 - 1917 and 1958 - 1962.

[Analysis on incidence for cervical cancer in Qidong during 1972 - 2000].

Objective: To investigate the trends of incidence for cervical cancer in the years of 1973 - 2000, in Qidong, a city in south China, with a population of 1.16 M.

Methods: Crude incidence rate of cervical cancer was calculated by using incident case data from Qidong Cancer Registry, which was founded in 1972, and age-standardized rates were computed according to China age structure of 1964 (CASR), and world age structure of 1960 (WASR).