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Three phases of the cardiac cycle. Diastole, atrial systole, ventricular systole.
Breathing. Exhalation and Inspiration. Cross section of human body with lungs and Diaphragm. Movement of rib cage, lungs and Diaphragm during inhale and exhale. vector illustration.
various virus types helical, polyhedral, spherical, and complex with labeled components like capsid, RNA, and diagram hand drawn schematic vector illustration. Medical science educational illustration
Biohazard Vector Sign Illustration. Biohazard warning illustration label. symbol sign of biological threat alert. Biological contamination danger label virus epidemic sign

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