Media type: E-Article Title: The Pollen-Tube Chemotropic Factor from Antirrhinum Majus: Bioassay, Extraction, and Partial Purification Contributor: Mascarenhas, Joseph P.; Machlis, Leonard imprint: Wiley, 1962 Published in: American Journal of Botany Language: Not determined DOI: 10.2307/2439418 ISSN: 0002-9122 Keywords: Plant Science ; Genetics ; Ecology, Evolution, Behavior and Systematics Origination: Footnote: