Fig. 5From: Preferential Y-Y pairing and synapsis and abnormal meiotic recombination in a 47,XYY man with non obstructive azoospermiaMeiotic progression was disturbed in the 47, XYY patient. Representative images show (a) Leptotene, (b) Zygotene and (c) Pachytene spermatocytes immunostained for SYCP3 (Red), MLH1 (Green) and CREST (Blue). d An increase in leptotene and zygotene, and decrease in pachytene spermatocytes were observed in the 47, XYY patient. N, The number of cells analysed; *** P <0.001, chi-square testBack to article page