all 1 comments

[–]Mnemonic 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

It makes sense though to draw a comparison. A child can poison the mother and vice versa (blood poisoning).

Also the whole context is missing, it's one slide of a powerpoint. It's s higher biology class so I wouldn't be surprised if it's about 'foreign' cellular growth and the differences.