Cyst posters & prints

Porphyrophora violaceae (scale insect) - cyst Anonymous

Porphyrophora sophorae (scale insect) - cyst Anonymous

'Cyst in the brain' William Say

Porphyrophora polonica (polish cochineal, polish carmine scale) - cyst Anonymous

An Old Man and a Boy, c.1490 Domenico Ghirlandaio

'Diseases of the uterus giving rise to excessive nervous irritation' C J Canton