dān hé xì bāo zēng duō zhèng
mononucleosis
单
dān
bill
核
hé
variant of 核[he2]
细
xì
thin or slender
胞
bāo
placenta
增
zēng
(bound form) to increase; to augment; to add to
多
duō
many; much; more; a lot of
症
zhèng
disease