Thrombocytopenia absent radius (TAR) affects the radius — the long, thin bone in the forearm — and platelet function. This defect commonly appears at birth or within the first few years of life.

The coronavirus disease-19 (COVID-19) pandemic that emerged in Wuhan, China, in late December 2019 spread rapidly throughout the world and has caused over 6.5 million deaths. The disease is caused by ...

Megakaryocytes, which are derived from hematopoietic stem cell precursors in bone marrow, form and release platelets; these circulate in the blood for 8 to 10 days before they are removed by hepatic ...

Blood clotting depends on speed, force, and timing. Platelets have to stay quiet while circulating through the body, then ...

COVID-19 triggers hyperactivity in platelets leading to the formation of more blood clots in some patients. Photo credit: Getty Images Changes in blood platelets triggered by COVID-19 could contribute ...

A panelist discusses how bleeding risk assessment depends on platelet count levels (highest risk below 20,000), requiring careful medication history review to avoid drugs that impair platelet function ...

For the first time, scientists at University of Leeds reveal a complex mechanism behind blood clotting. The findings, ...

Intravital microscopy image from the liver of a mouse model: a platelet (turquoise) adheres to the inflamed vessel wall (yellow dashed outline) and sheds a long, filamentous membrane extension—a ...