2.2 Specimen Collection
For patients with a cervix, a special TCT brush and/or HPV special brush
was used to scrape the cervical exfoliated cells at the junction of the
squamous column epithelium and the cervical canal. For patients who had
undergone total hysterectomy, brush-cell samples were from vaginal
stump. The cell samples were stored in the corresponding cell preserve
solution for cytology and HPV testing.