| 词汇 | seronegative |
| 释义 | seronegative adjective medical specializeduk /ˌsɪə.rəʊˈneɡ.ə.tɪv/ us /ˌsɪr.oʊˈneɡ.ə.t̬ɪv/ showing a negative result of a blood test for a particular antibody(= a substance in the blood that fights a disease): 血清反应阴性的 children who remain seronegative after polio vaccinations 在接种脊髓灰质炎疫苗后血清反应呈阴性的儿童 Non-existence and not being absence absent aren't defunct die disappear extinct extinguishment lamented negation non-being non-body non-existent nothingness now defunct presence such there's no such thing/person (as)idiom unfulfilled wasn't You can also find related words, phrases, and synonyms in the topics: The circulatory system & blood Examples of seronegativeseronegative All 28 children followed for 12 months became seronegative, thus excluding a congenital infection. This was the number of individuals that were seronegative when captured prior to that period and were recaptured after that period. The period of time it took for eight seropositive herds to become seronegative during the observation period varied from 2 to 22 months. Two approaches were taken to designate sera as seropositive or seronegative. In total, 341 (221 seronegative and 120 seropositive) students were followed up clinically and serologically during a subsequent outbreak. Six out of nine seronegative herds, which became seropositive, returned to their negative status after 3-7 months. Two control flocks per case were randomly selected from the flock population that was seronegative for 1997 and 1998 in the same province. Remitting seronegative, symmetrical synovitis with pitting edema - 13 additional cases. Fifty-four seropositive and 108 seronegative index children were included and 480 out of 548 family members contributed blood. On 21 occasions (18 %), growers were seronegative, while the finishers in the subsequent sampling round were seropositive. Potential detection of the seroconversion of an individual rabbit required that it be caught whilst seronegative and subsequently recaptured. For statistical analysis, negative and equivocal laboratory results were grouped together and classified as seronegative. The severity of illness and case-fatality ratios were observed to be more among seronegative individuals than seropositives during an epidemic. The proportion seronegative for diphtheria tended to increase with age such that 42 % of individuals aged >40 years were seronegative. The participation rate was 54/68 (79 %) for seropositive index children and 108/165 (65 %) for seronegative index children. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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