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Immune cells blast infections and cancer with protein ‘bombs’

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To slay the larger cancer cell they are attached to, the two smaller killer T cells release protein bombs. By Mitch LeslieOur immune system’s killer T cells earn their name.

They destroy infected and cancerous cells, and now, research reveals new details about how they do it. The cells bombard their targets with protein “bombs” packed with deadly chemicals.The study “is clearly a significant step forward in refining our knowledge” about how these immune sentinels take out dangerous cells, says immunologist David Masopust of the University of Minnesota Medical School.One of a killer T cell’s most important weapons is perforin, a protein that punctures the outer membrane of the target cell.

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COVID-19
United States
United States
Cases: 46 252 513
Deaths: 750 423
Recovered: 0
India
India
Cases: 34 321 025
Deaths: 459 652
Recovered: 0
Brazil
Brazil
Cases: 21 835 785
Deaths: 608 235
Recovered: 0
United Kingdom
United Kingdom
Cases: 9 215 683
Deaths: 141 607
Recovered: 0
Russia
Russia
Cases: 8 494 589
Deaths: 237 619
Recovered: 0
Detail statistic
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