regulation of Malpighian tubule diameter
Ensuring that the Malpighian tubule is the correct width. Malpighian tubules have a uniform circumference along their length; the circumference of the tubes is eight cells during the time the cells are dividing, after which the cells rearrange producing tubes with a cirumference of two cells.
GO:0035296
regulation of tube diameter
is_a
GO:0035298
regulation of Malpighian tubule size
is_a