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A patient was observed who came with the following symptoms persisting for six months: paraesthesia in the lower and upper limbs, weakening of muscle strength, difficulties in walking. The high value of the mean cell volume in blood morphologic examination called attention to the possibility of vitamin B12 deficiency which had not yet manifested itself as(More)
Adult females of the two-spotted spider mite (Tetranychus urticae Koch), showed a daily rhythm of sensitivity to DDVP (dimethyl 2,2-dichlorovinyl phosphate). When the mites were maintained in alternating light-dark conditions, maximum susceptibility to the chemical occurred 2 hours after dawn and the mites were least sensitive 2 hours after nightfall.