An unrooted phylogenetic tree of mycoplasma Cypl-like proteins. hyor, M. hyorhinis; geni, M. genitalium; hyop, M. hyopneumoniae; pneu, M. pneumoniae; pene, Mycoplasma penetrans; pulm, M. pulmonis; gall, M. gallisepticum; agal, M. agalactiae; syno, M. synoviae; arth, M. arthritidis; myco, M. mycoides; capr, M. capricolum. The figure was generated in PHYLIP (14).