What does YS stand for?
YS stands for "Yolk Sac"
How to abbreviate "Yolk Sac"?
"Yolk Sac" can be abbreviated as YS
What is the meaning of YS abbreviation?
The meaning of YS abbreviation is "Yolk Sac"
What does YS mean?
YS as abbreviation means "Yolk Sac"