SEARCH Articles Figures Tables Cell-free assays ponasterone A activity Ecdysteroids ponasterone Ponasterone A 22-hemisuccinate Ponasterone A 6-carboxymethyloxine activity Ponasterone A activity Ponasterone A dimer Ponasterones Ponasterones Sarcophaga bioassay ponasterone A 2p-glucoside Tissue bioassays ponasterone A activity Whole insect assays ponasterone A activity