Novel vectors are described that incorporate, inter alia, a novel 3 gene trap cassette that does not encode a marker conferring antibiotic resistance and which can be used to efficiently trap, mutagenize, and identify previously unknown cellular genes. Vectors incorporating the presently described 3...http://www.google.fr/patents/US6808921?utm_source=gb-gplus-shareBrevet US6808921 - Vectors for gene mutagenesis and gene discovery
