False-colour scanning electron micrograph (SEM) of aggregrates of human blood platelets. Platelets (thrombocytes) are small, non-nucleated cells formed in the bone marrow & are present in circulating blood in large numbers. Their individual shape is round or oval (2-3 micrometres in diameter). Platelets function in 2 ways. Firstly, they help plug small defects in the walls of small blood vessels: secondly, they contribute towards the process of clotting & also release serotonin, which reduces blood flow by constricting the damaged vessels. Magnification: X 4,400 at 35mm size.
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Creative#:
TOP10218490
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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No
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