TY - JA AU - Shimamoto,K. AU - Nelson,O.E. TI - Isolation and characterization of aminopterin-resistant cell lines in maize PY - 1981/// N1 - Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0032-0935 T2 - Planta ER -