they come from the bone marrow
Red bone marrow produces platelets as well as RBCs and WBCs.
red blood cells and white blood cells and platelets
I can partly answer this question: Basophils, which are granular leukocytes, are a part of our bodies natural makeup, they produce heparin (an anticoagulant), histimines (an inflammatory substance), and serotonin (a vasoconstictor).
Your mother
myeloblast
Largest In infants and shrinks with age
Bone marrow
bone marrow
The kind of marrow that produces red blood cells, white blood cells, and platelets is red marrow which is found in the bones.
Bone marrow
A normal adult produces 100 to 200 billion platelets in each day
it produces the components of the blood: white blood cells, red blood cells, and platelets