Term Name:	A axonemal microtubule
Synonyms:	A tubule
Definition:	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.
Ontology:	GO: Cellular Component [GO:0097649]    QuickGO    AmiGO