Prayers for New York.
When things like this happen, one thinks of the blood we all share. I give to Red Cross as I'm able. Be safe my friends.
This microscopic look at human blood reveals that nearly half of our blood is composed of red blood cells. These lozenge-shaped cells have the all-important role of delivering oxygen to our tissues. T cells (orange) are an essential part of the immune system. Platelets (green), the smallest blood cells, clump together into clots to stanch bleeding after an injury. Image courtesy of Dennis Kunkel,
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