Case 219. 

Parvovirus B19-induced hydrops fetalis (25 f-w F, prematurity)
　 　 　 　
　 Intrauterine fetal death at the 25th week of gestation, showing hydrops fetalis (the mother suffered from erythema infectiosum at the 10th week of gestation) 　
　 　 　 　

　

 　 Electron micrograph of the nuclear inclusion in an erythroblast. Numerous small-sized (20 nm in diameter) viral particles without elvelop formation are clustered.