This is a paid asset, but now you can download Blood Bag for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Blood Bag v1.0
There is a PBR textured Blood Bag. You can use your interior Hospital, research, Urban Criminal games of found based games.
For Texture maps ; Pbr Maps Contains
2048×2048 AlbedoTransparency TGA
2048×2048 Normal TGA
2048×2048 SpecularSmoothness TGA