Neutrophils have big bosoms. Most of the time, a huge amount of cleavage is exposed throughout the series.

Ep3 contains cleavage (every episode) + is about sexual arousal & sexing for reproduction u can see the RBCs going to the penis & it contains details.

In general a lot of blood and violence

Smoking and alcohol is mentioned a bit mainly in episodes 1 and 2 alcoholism is referenced and smoking is mentioned in episode 1

Heavy medical topics such as cardiac arrest and STDS,