Answer: tubule

AnswerCrossword Clue
TUBULECapillary's cousin
TUBULESmall pipe
TUBULESmall cylindrical structure
TUBULECousin of a capillary
TUBULETiny biological channel, as in the kidney
TUBULETiny hollow cylinder
TUBULECapillary, e.g.
TUBULECapillary
tubulesmall tube
tubulea small tube