Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Promyelocyte
open-in-new
<p>A promyelocyte (or progranulocyte) is a <a href="/facts/Granulocyte/zsE3ldLb">granulocyte</a> precursor, developing from the <a href="/facts/Myeloblast/g32XTIXd">myeloblast</a> and developing into the <a href="/facts/Myelocyte/VKRWVD78">myelocyte</a>. Promyelocytes measure 12–20 microns in diameter. The <a href="/facts/Cell_nucleus/D7sFRa3c">nucleus</a> of a promyelocyte is approximately the same size as a myeloblast but their <a href="/facts/Cytoplasm/Wa0sE6xf">cytoplasm</a> is much more abundant. They also have less prominent <a href="/facts/Nucleolus/X7B5HKM4">nucleoli</a> than myeloblasts and their <a href="/facts/Chromatin/ha0TJheJ">chromatin</a> is more coarse and clumped. The cytoplasm is basophilic and contains primary red/purple granules. </p>