| characterization of mexican strains of avian infectious bronchitis isolated during 1997. | ten infectious bronchitis virus (ibv) isolates were recovered from broiler chickens in the states of queretaro and guanajuato in mexico. the viruses were isolated from trachea, lung, kidney, and cecal tonsils of birds that showed respiratory signs in spite of vaccination with massachusetts (mass) and connecticut strains of ibv. each isolate was identified by an accession number from 1 to 10. six of the isolates were neutralized by mass monoclonal antibodies, whereas the other four were not. in a ... | 2000 | 11195651 |
| relative validity of a tool to measure food acculturation in children of mexican descent. | the purpose of this study was to examine relative validity of a food frequency questionnaire (ffq) to measure food acculturation in young mexican-origin children. in 2006, spanish-speaking staff interviewed mothers in a community-based sample of households from ventura, california (us) (n = 95) and guanajuato, mexico (mx) (n = 200). data included two 24-h dietary recalls (24-dr); a 30-item ffq; and anthropometry of the children. to measure construct, convergent, and discriminant validity, data a ... | 2016 | 26603574 |