Formation of photosynthetic pigments. The percentage amounts of PChlide and Carotenoids from barley plants etiolated grown in the presence of EMF with respect to those of controls (normalized to 100%) grown under the same conditions but in the absence of an EMF. The left 3 bar groups summarize the data for the experiments with one culture exposed to EMF (BDC = 65 μT, f(BAC) = 50 Hz). The right 6 bar groups show the data from the gradient MF experiments under several field strengths from 55 to 75 μT. The pigment concentrations are decreased at BDC = 65 μT, corresponding to ICR conditions of Ca2+.