TY - RPRT TI - An amphioxus homeobox gene: sequence conservation, spatial expression during development and insights into vertebrate evolution. AU - P W Holland AU - L Z Holland AU - N A Williams AU - N D Holland PY - 1992 DO - 10.1242/dev.116.3.653 UR - https://pubmed.ncbi.nlm.nih.gov/1363226/ ID - 1363226 ER -