Donut Chart from Scientific Research

Circular plot showing the proportions of the four primary sample types in the Brain Cell Atlas: adult (n =8,062,832), fetal (n =2,203,728), organoid (n = 861,169) and tumor (n = 234,295). A fraction of nonadult postnatal samples ranging from 0 to 20 years old were included in the adult brain data (see b ).

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