A dynamic, actin-rich projection extending from the surface of a migrating animal cell. [ http://www.ncbi.nlm.nih.gov/pubmed/19095735 http://www.ncbi.nlm.nih.gov/pubmed/11429692 http://www.ncbi.nlm.nih.gov/pubmed/12153987 ]
Term information
Although in some literature 'microspike' and 'filopodium' are used synonymously, in GO microspike refers to a cell projection that is distinct from a filopodium. See also 'filopodium ; GO:0030175'.