Chromatin organization within nuclear blebs in leukocytes of Xenopus laevis.

The nuclei from leukocytes of peripheral blood, liver and spleen of an individual anaemic Xenopus laevis have been found to possess numerous nuclear blebs or projections. There structures were found to be very variable in size and shape as viewed in electron micrographs, but commonly included an enclosed mass of cytoplasm bound on one side by a very thin section of nuclear material. Such sections are membrane bounded on each side and frequently display an interesting ordered array of chromatin.