Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Expression of GATA binding factor 1 (GATA1) in normal bone marrow. A, Intense nuclear expression is present only in megakaryocytes and erythroid precursors (×40). B, Varying nuclear staining intensity in erythroblastic islands is best seen without hematoxylin counterstain, with strongest reactivity in the early forms and reduction in intensity with maturation (×40).
