Immune system concept. Medical shield surrounded by viruses and bacterium. Protect from virus. Vector illustration isolated on white background.
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Vitamin A or retinol icon
Power plant or factory generating pollution in the air or atmosphere
Immune system concept. Medical shield surrounded by viruses and bacterium. Protect from virus. Vector illustration isolated on white background.
Erythrocyte or red blood cells background. 3d realistic vector picture of hemoglobin for hematology,
Red forbidden sign with a cigarette, No smoking concept.
The mosquito sucks blood
膏状物体
Photo taken by professional camera and lens
Photo .
维生素胶囊_健康与营养