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Index Pd1

PD1 may refer to. [1]

2 relations: Programmed cell death protein 1, Prussian S 3.

Programmed cell death protein 1

Programmed cell death protein 1, also known as PD-1 and CD279 (cluster of differentiation 279), is a protein found on the surface of cells that has a role in regulating the immune system's response to the cells of the human body by down-regulating the immune system and promoting self tolerance by suppressing T cell inflammatory activity.

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Prussian S 3

The Prussian Class S 3s were saturated steam locomotives developed by Hanomag for the Prussian state railways and were built from 1893.

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[1] https://en.wikipedia.org/wiki/Pd1

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