title: Alternative procedure to screening a large number of plates for a low number of mutants.
abstract: An apparatus is described in which tygon tubing replaces the use of petri dishes in the screening of a large volume of agar for an expected low number of mutants.
mesh_terms: D001431:Bacteriological Techniques / Q000295:instrumentation*; D005516:Food Microbiology; D008722:Methods; D009154:Mutation; D013291:Streptococcus / Q000302:isolation & purification*