A axonemal microtubule
A complete microtubule with 13 protofilaments that fuses with an incomplete microtubule called B tubule (containing 10 protofilaments only) to form an axonemal outer doublet. Inner and outer dynein arms, as well as the radial spoke, are attached to the A tubule.
GO:0005879
axonemal microtubule
is_a
GO:0097545
axonemal doublet microtubule
part_of
A tubule
broad