tubule

As a proper noun channel

is (by ellipsis) the english channel.

As a noun tubule is

a small pipe or fistular body; a little tube.

As nouns the difference between nephron and tubule

is that nephron is nephron (basic structural and functional unit of the kidney) while tubule is a small pipe or fistular body; a little tube.

As nouns the difference between duct and tubule

is that duct is a pipe, tube or canal which carries gas or liquid from one place to another while tubule is a small pipe or fistular body; a little tube.

As a verb duct

is to channel something through a duct (or series of ducts.

As a noun tubule

is a small pipe or fistular body; a little tube.

As an adjective intertubular is

between tubes or tubules.

As nouns the difference between tubule and tubulocyst

is that tubule is a small pipe or fistular body; a little tube while tubulocyst is a cyst formed by the blockage of a tubule.

As nouns the difference between tubule and tubulointerstitium

is that tubule is a small pipe or fistular body; a little tube while tubulointerstitium is (anatomy) the tubules and interstitial tissue of the kidneys.

As a noun tubule

is a small pipe or fistular body; a little tube.

As an adjective tubulointerstitial is

(anatomy) of or pertaining to the interstitium and tubules of the kidney.

As nouns the difference between tubule and tubulogenesis

is that tubule is a small pipe or fistular body; a little tube while tubulogenesis is (physiology) the formation of tubules in epithelial or endothelial cells.

As nouns the difference between tubule and nanotubule

is that tubule is a small pipe or fistular body; a little tube while nanotubule is a nanosized tubule.