Fig. 1.
Fig. 1. Microvessels in APL and control bone marrow biopsy specimens. / (A) Many microvessels were evident in this diagnostic bone marrow trephine biopsy specimen from a patient with APL. (B) In contrast, this normal control bone marrow biopsy sample had few microvessels. Microvessels were highlighted by immunohistochemistry with the use of antibodies to CD34 (brown). Original magnification, 600 ×.

Microvessels in APL and control bone marrow biopsy specimens.

(A) Many microvessels were evident in this diagnostic bone marrow trephine biopsy specimen from a patient with APL. (B) In contrast, this normal control bone marrow biopsy sample had few microvessels. Microvessels were highlighted by immunohistochemistry with the use of antibodies to CD34 (brown). Original magnification, 600 ×.

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