Cov lus piav qhia ntxaws
Muaj ob hom: daim ntawv kuaj ntshav thiab daim ntawv kuaj qaub ncaug
1. Daim ntawv kuaj ntshav tuaj yeem kuaj pom tag nrho cov ntshav, ntshav thiab cov ntshav kuaj ntshav.
2. Daim ntawv kuaj qaub ncaug yog siv los kuaj xyuas qhov ncauj mucosa exudate kuaj.