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Platycnemididae are a family of damselfly called white-legged damselflies.
In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol
Rubella rash in a young child. Rubella is also called 3-day measles or German measles.
A pedigree for a rare autosomal recessive trait. In these pedigrees, most affected individuals have
The karyotypes of individuals
Similar-looking, related species that are native to distant geographic realms