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sdas [7]
3 years ago
13

What does the blue lines stand for

Health
2 answers:
Ganezh [65]3 years ago
8 0
Hey there!

In this picture, the blue lines stand for the veins inside the human body.

Hope this helps you.
Have a great day!
Luda [366]3 years ago
4 0
Red are arteries and blue are veins i believe.
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