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Fig. 6. 20E blocks S2* cell proliferation, but proliferation is
unaffected by JHa methoprene; JHa treatment does not prevent the 20E-mediated
block in cell proliferation. Cells were left untreated (filled triangles), or
were exposed to 20E (open squares), JHa (filled squares) or both hormones
(open triangles); cell counts were monitored every 24 h over the next 3 days.
Shown are cell counts (in units of 106 cells ml–1
cell culture media) over time. The result shown is representative of three
independent experiments (data not shown).