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The microtubules of root hairs of Raphanus sativus, Lepidium sativum, Equisetum hyemale, Limnobium stoloniferum, Ceratopteris thalictroides, Allium sativum and Urtica dioica were investigated using immunofluorescence and electron microscopy. Arrays of cortical microtubules were observed in all hairs. The microtubules in the hairs show net axial(More)
Cortical microtubule arrays in meristematic and differentiated cortical cells from root tips of Raphanus sativus were studied using both immunofluorescence and dry cleaving. Length, density and orientation of the cortical microtubules were measured. Between individual, non-dividing cells of the meristematic zone the mean microtubule length varied from 0.9(More)
We report on a prenatally detected case of ring chromosome 18 [46,XX,r(18)] in amniotic fluid cells of a fetus with an abnormal facial profile on ultrasound as the only malformation. The chromosome 18 origin of the ring chromosome, of a supernumerary marker chromosome in some cells, and of micronuclei was demonstrated by fluorescent in situ hybridization(More)
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