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Beautiful Damselfly (pres. Pseudagrion Apicale) In Maraontsetra, Madagascar
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Beauty Of Human Body Concept. African American Bodybuilder Posing At Sunset During Outdoor Training And Showing His Muscles
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3d Computer Illustration Of A Dendritic Cell. They Areantigen-presenting Cells Of The Immune System. Their Main Function Is To Process Antigen Material And Present It On The Cell Surface To The T Cells Of The Immune System. They Are Messengers Betwe
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Dendritic Cells Present Antigens (green) To Lymphocytes Through Their Membran Bound MHC-molecules (violet). CD4 Molecules (light Blue) Bind To Other Portions Of The MHC, Strengthening The Interaction.
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Cancer Cells Express PD-L1 (orange) Proteins On Their Surface To Trick The Immune System. The Interaction Of PD-L1 With PD-1 Of T-cells Leads To A Down-regulation Of T-cells. The Antibody (yellow) Blocks This Interaction.
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Beauty And Sports Concept. Silhouette Of Bodybuilder Posing At Sunset During His Outdoor Training
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Ornate Red Art Deco Or Art Nouveau Parisian Metro Sign Near By The Saint Germain Des Pres Church And Merto Stop In Paris France
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