Electron Microscopic Cytochemical Study of Cyclic Adenosine Monophosphate Phosphodiesterase Activity During Gold Acclimation of Wheat Seedlings Effect of Lotusine on Haemodynamics in Rat and Canine Effects of rhizosphere pH on utilization of P in phytin and lecithin by maize Depletion of tyrosyl-DNA phosphodiesterase 1α (MtTdp1α) affects transposon expression in Medicago truncatula