| the origin and genetic differentiation of native breeds of pigs in southwest china: an approach from mitochondrial dna polymorphism. | mitochondrial dna (mtdna) of six breeds of native domestic pigs from yunnan province, southwest china, and two wild boars obtained from sichuan, china, and vietnam was analyzed using 20 restriction endonucleases that recognize six nucleotides. restriction maps were made by double-digestion methods and polymorphic sites were located on the map. according to their mtdna restriction types, all the breeds were classified into six groups. genetic distances among groups were calculated to define their ... | 1993 | 8097084 |
| the epidemiology of human trichinellosis in china during 2000-2003. | the endemic foci of trichinellosis continue to be mainly located in the southwestern, the central and northeastern china. the seroepidemiological surveys of t. spiralis infection in humans were carried out in six provinces or municipals (p/m) of china during 2000-2003, the overall seroprevalence was 3.57%. from 2000 to 2003, 17 outbreaks of human trichinellosis, with 828 cases and 11 deaths, were recorded in 8 p/a of china. all of 11 deaths occurred in the southwestern china (1 case in sichuan, ... | 2006 | 16414006 |
| molecular investigation of torque teno sus virus in geographically distinct porcine breeding herds of sichuan, china. | torque teno sus virus (ttsuv), infecting domestic swine and wild boar, is a non-enveloped virus with a circular, single-stranded dna genome. which has been classified into the genera iotatorquevirus (ttsuv1) and kappatorquevirus (ttsuv2) of the family anelloviridae. a molecular study was conducted to detect evidence of a phylogenic relationship between these two porcine ttsuv genogroups from the sera of 244 infected pigs located in 21 subordinate prefectures and/or cities of sichuan. | 2013 | 23705989 |
| mitochondrial dna evidence indicates the local origin of domestic pigs in the upstream region of the yangtze river. | previous studies have indicated two main domestic pig dispersal routes in east asia: one is from the mekong region, through the upstream region of the yangtze river (uryz) to the middle and upstream regions of the yellow river, the other is from the middle and downstream regions of the yangtze river to the downstream region of the yellow river, and then to northeast china. the uryz was regarded as a passageway of the former dispersal route; however, this assumption remains to be further investig ... | 2012 | 23272130 |
| molecular detection of porcine astrovirus in sichuan province, china. | porcine astrovirus (poastv) is widely distributed worldwide, and is highly prevalent among piglets with or without diarrhea, existing as at least five distinct lineages (poastv1-poastv5) within the genus mamastrovirus. however, our knowledge of the diversity and epidemiology of poastv in china is limited. | 2016 | 26739067 |