microtubules.... might be right
The cell is called MICROTUBULES
microtubules
cytoskeleton
microtubules
microtubules
(Arthrophytes ) Plant stems are filled with hollow tubes that run parallel to the stem. These tubes use pressure to transport water to areas of the plant that need it.
siphons
cytoskeleton
microtubules
protein
microtubules
microtubules
Microfilaments are thinner rods of protein that enable movement. Microtubules are hollow tubes that give rigidity and shape. Flagella and cilia have microtubules in their centers.
Hollow tubes is an redundant expression. Tubes must be hollow, by definition. However tubes can be filled with something so they are not "empty" (they still will be hollow).
For the same amount of metal, hollow tubes are much stronger than solid tubes.
Stalagmites
A capillary is hollow. It is the smallest of the blood vessels, the tubes that carry blood.
Microtubules consists of hollow tubes which provide support of the cell.
IPS tubes are bus tubes where the current is carried through AL / Cu tubes (Hollow inside) and ACSR conductor are conductors basically with no any hollow part inside. Bus tubes given hollow portion inside taking in consideration greater skin effect to the current they carry -Anand Girgaonkar