Improved distal tip of a double-lumen cytology brush.
Silverman
W B
WB
D001706:Biopsy; D003585:Cell Biology / Q000295:instrumentation*; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000379:methods; D002779:Cholestasis / Q000473:pathology*; D006801:Humans