Plant parasitic nematodes on golf courses present special problems for both disease diagnosticians and superintendents. In contrast to fungal diseases, which are unacceptable at any level, low to moderate levels of plant parasitic nematodes should be expected in any stand of turf. The difficult part of managing a potential nematode problem is determining when the nematode population is actually...

With the (near-)availability of complete sequences of human and other genomes, research effort is turning from obtaining the sequence itself towards determining the biological function of the genes within the sequence. One approach, made practically feasible with the advent of DNA microarray technology, consists of clustering of genes into groups of coexpressed genes, i.e. genes exhibiting simi...

To cite: Machado M, Vidal RL, Cardoso P, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/ bcr-2015-213388 DESCRIPTION A 3-year-old boy presented with pigmented (brownish) macules on his hands (figure 1), left arm (figure 2) and face (figure 3). The lesions appeared days after the boy played with common rue and were best noticed after sun exposure. Topical treat...