The binding of 5-fluoro-2'-deoxyuridylate generated from 5fluoro-2'-deoxyuridine in intact cells was used to measure changes in the level of thymidylate synthetase during the course of population growth of murine leukemia L1210 cells. By the use of elutriation techniques and flow cytometric analysis, the amount and activity of thymidylate synthetase associated with the var ious phases of the ce...

—The poorly known European species Janetiella thymi (Kieffer), type species of Janetiella Kieffer (Diptera: Cecidomyiidae), is redescribed. Gall makers on grape that were formerly placed in Janetiella are shown to be distinct from that genus and transferred to Vitisiella Fedotova & Kovalev, a genus recently erected for a species on grape in Siberia. Among the distinguishing traits of Vitisiella...