cosmid Paper: vans GA et al. High efficiency vectors for cosmid microcloning and genomic analysis. Gene 1989; 79(1):9-20. This term is mapped to MGED. Do not obsolete without consulting MGED ontology. cosmid vector SO:0000156 sequence A cloning vector that is a hybrid of lambda phages and a plasmid that can be propagated as a plasmid or packaged as a phage,since they retain the lambda cos sites. http://en.wikipedia.org/wiki/Cosmid vector_replicon