chicken bone
The vinegar (weak acetic acid) will de-calcify (remove the calcium) from the bone - thus rendering it flexible...easy to perform yourself. Best to clean the bone well before trying, change vinegar solution each day.
no... its based on flexibility
strength and flexibility
Chicken soup.
Not unless they said it was bone less chicken salad.
very much
Neither. ;)
bone
No
Collagen
collagen fibers
Hip bone, leg bone, head bone.