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A boy with Sydenham's chorea and involuntary movements of a hand, 3D illustration. An autoimmune disease after Streptococcus infection due to antibodies against cells of brain basal ganglia and heart
Illustration of an animal cell showing nucleus, mitochondria, Golgi apparatus, lysosomes, and organelles for educational use.
Carbon atom simplistic representation with golden nucleus, orbitals and electrons on black gray background. 3d illustration.
Woman and virtual model of atom on dark background, closeup
The comet Neowise officially known as C2020 F3 showing its blue ionic tale

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