Bioteque Cytology Brushes (TEA-R1011). The cytology brushes are medically clean devices that are used to collect samples from the cervix during PAP smears. The samples are pathologically analyzed to detect the early stages or the onset of cancer. The cervical brush has a tapered 3/4" brush securely attached to the handle. The brush is made of nylon and captivated with a medical-grade stainless steel wire. 100/BX. Priced per box. FREE Shipping!