Umbilical Cord

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Aug 9, 2019 21:24
I've heard that this name is used as a metaphor for a lifeline recently.
It means that it's very important and necessary to keep someone's life.
(If you feel creepy for this topic, I recommend you to stop reading the rest.)

It's also called "navel string." It's a cord between a baby and its mom in her body before birth. So it's vital and they can't cut it off before then. Through the cord, mom gives nutrition and oxygen to her baby.

I don't know whether you know or not, the Japanese have a custom to keep it after it separates from the baby naturally and it occurred a few weeks later after its birth.

It's kept in a wooden box, made of "桐 (kiri in Japanese, also as known as Paulownia tomentosa, empress tree, or foxglove-tree.) It's good for protecting from humidity. (I want to explain this wood in the other article.)
I think it's because most people regard it as a symbol or a precious memory of the connection between a baby and its mom.

In these days, I've heard it's used for transplant. It's because it has a lot of stem cells that will be based on the blood cells.