microtubules

<cell biology> Thin tubes made up of protein that are used to make structures involved in cellular movement such as flagella. ... (09 Oct 1997) ...
Found on http://www.encyclo.co.uk/local/20973

microtubules

A key structural element of the scaffolding structure of a cell or cytoskeleton.
Found on http://www.encyclo.co.uk/local/22236

Microtubules

are the largest filament in the cytoskeleton. They are the hollow tubes along which cell products are conducted long distances. The system is not unlike a railway network around the cell, sometimes involving long distances. For example, neurones transport out neurotransmitter substances along the axons to distant synapses, inside microtubules.
Found on http://www.encyclo.co.uk/local/20169

Microtubules

Filaments about 25 nanometers in diameter found in cilia, fiagella, and the cytoskeleton.
Found on http://www.superglossary.com/Glossary/Science/Biology/

microtubules

Tiny tubes found in almost all cells with a nucleus. They help to define the shape of a cell by forming scaffolding for cilia and they also form the fibres of mitotic spindle (see mitosis)
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0025992.html

microtubules

Type of filament in eukaryotic cells composed of units of the protein tubulin. Among other functions, it is the primary structural component of the eukaryotic flagellum.
Found on http://www.ucmp.berkeley.edu/glossary/glossary_4.html
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