| [studies on the strain differences of schistosoma japonicum in the mainland of china. ii. susceptibility of mammalian hosts]. | six species of animals were percutaneously exposed to cercariae obtained from pools of naturally infected snails from different isolates of s. japonicum in the mainland of china as shown in tables 1 and 2. our results indicated that with the exception of rat, all animals under study were permissive host though their worm recovery rates varied with different isolates. the mean prepatent period in different host species were 35.0 +/- 0.8 to 36.4 +/- 1.0 days for anhui isolate; 34.5 +/- 1.2 to 36.4 ... | 1990 | 2099256 |
| classification of agkistrodon species in china. | the wide geographical distribution of agkistrodon and the slight morphological differences among the snakes of the genus agkistrodon in china have posed a problem to taxonomists. we have employed polyacrylamide gel electrophoresis and immunological diffusion techniques for comparison of the venoms of different species and subspecies of agkistrodon from various localities. the electrophoretic patterns of the proteins of the venoms were different from each other, but showed certain relations withi ... | 1984 | 6426095 |
| variation in the sequence of a mitochondrial nadh dehydrogenase i gene fragment among six natural populations of schistosoma japonicum from china. | the present study investigated the level of genetic variation among schistosoma japonicum populations of different geographical origins from mainland china. polymerase chain reaction-based methods were employed to determine the sequence for a subunit of the mitochondrial nadh dehydrogenase i gene for populations from zhejiang, anhui, jiangxi, hunan, hubei and sichuan. no variation was detectable in the nadh dehydrogenase i sequence within populations from zhejiang and hubei, whereas sequence var ... | 1998 | 9925274 |
| an electrophoretic comparison of schistosoma japonicum (trematoda) from different provinces in the people's republic of china suggests the existence of cryptic species. | schistosoma japonicum from the people's republic of china is considered to represent a single species comprising either 1 or 4 'strains'. we conducted an allozyme electrophoretic study to examine the extent of genetic variation in s. japonicum from mainland china. the allelic profiles of s. japonicum from 7 provinces were established at 16 enzyme loci. s. japonicum from sichuan had 3-5 (19-31%) fixed differences compared with those from zhejiang, anhui, jiangxi, hunan, hubei and yunnan, suggesti ... | 1999 | 10581616 |
| [sequencing of mitochondrial dna cytochrome oxidase subunit i gene in sarcosaphagous flies from 14 provinces in china]. | to detect the 278 bp region of gene of the cytochrome oxidase subunit i (coi) in mitochondral dna (mtdna) of sarcosaphagous flies, identify the species of sarcosaphagous flies, and provide reference for forensic application. | 2010 | 20818074 |