Figure 1.

Histology and karyotype of Burkitt's lymphoma. (A) H&E staining of a lymph node biopsy specimen from a patient with Burkitt's lymphoma. Scale bar indicates 50 μm. (B) Karyotype analysis. Arrows indicate breakpoints of the diagnostic t(8;14) chromosomal translocation. Arrowhead indicates loss of one copy of chromosome 17 (see text for details).