C3a

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Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009

Which Is Correct: Hanukkah or Chanukah?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Entrants falling and tumbling over while chasing the cheese at the 2016 'Cheese Rolling' held at Cooper's Hill, in the Cotswolds, Brockworth England

7 of the World’s Most Dangerous Festivals

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Coriander leaves, fresh green cilantro on wooden background, herbs

Why Does Cilantro Taste Like Soap to Some People?

Panama Canal infographic

Timeline and Map of the Panama Canal

Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society

The 10 Greatest Basketball Players of All Time

C3a

protein

Learn about this topic in these articles:

inflammation

In inflammation: Chemical mediators of inflammation
…in the complement system, namely C3a and C5a. Many cytokines secreted by cells involved in inflammation also have vasoactive and chemotactic properties.
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