造血幹細胞

造 = 告 + 辶 : Mnemonic symbol: an automated robot arm like the ones used to manufacture cars.

造 = 告 + 辶 : In the aortas bathroom, Zorro sets up a robot arm to manufacture gladiator sandals for him. He also programmed the robot arm to set up a LED display to count how many pairs of sandals it produced.

血 = 丶 + 皿 : Mnemonic symbol: blood transfusion.

Xu Xian hurt himself and needs to get a blood transfusion in the elevator's bathroom. He found a petal leaf as donor, which is bleeding droplets into a bowl; Xu Xian gets the blood from the bowl as infusion using some tubes.

干 = 一 + 十 : Guy Fawkes (g) is working (干) out in the anthill's bathroom (an4). He's lifting a flute (一) in one hand and a cross (十) in the other.

细 = 田 + 纟 : Marie Curie inspects her farm in the space station's bathroom. She set up a field where innocent silk worms have to die only for the production of fine and slender silk threads.

胞 = 包 + 月 : The moon (月) got a child in front of the aorta (ao1). Beelzebub (b) finds that the placenta (胞) is a small moon cake, which he places in his colorful handbag (包) for later.