US PATENT SUBCLASS 435 / FOR 180
.~ Using vector, e.g., plasmid, etc. (935/55)

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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

FOR 177  DD  METHODS OF INTRODUCING A GENE INTO A HOST CELL, E.G., TRANSFORMATION OR TRANSFECTION, ETC. (935/52) {3}
FOR 180.~ Using vector, e.g., plasmid, etc. (935/55) {2}
FOR 181  DD  .~.~> Plasmid (935/56)
FOR 182  DD  .~.~> Virus (935/57) {1}