title: Novel Filter for Biological Materials.
abstract: Thin plastic sieves with precisely controlled hole size and density can be made by irradiating plastic films with fission fragments and etching out the material traversed by the fragments. These filters may be used for the nondestructive separation of cells of closely similar sizes.
authors.forename: R L
authors.initials: RL
authors.lastname: Fleischer
authors.forename: P B
authors.initials: PB
authors.lastname: Price
authors.forename: E M
authors.initials: EM
authors.lastname: Symes