US PATENT SUBCLASS 435 / 238
.~.~ By chemical treatment


Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

235.1  DF  VIRUS OR BACTERIOPHAGE, EXCEPT FOR VIRAL VECTOR OR BACTERIOPHAGE VECTOR; COMPOSITION THEREOF; PREPARATION OR PURIFICATION THEREOF; PRODUCTION OF VIRAL SUBUNITS; MEDIA FOR PROPAGATING {2}
236  DF  .~ Inactivation or attenuation; producing viral subunits {2}
238.~.~ By chemical treatment


DEFINITION

Classification: 435/238

By chemical treatment:

(under subclass 236) Subject matter which involves attenuation of a virus by chemical means.