Scar muscular power and possibly heart failure. However, there are some tissues (e.g. bone) that can heal without any structural or functional deterioration. All scarring is composed of the same collagen as the tissue it has replaced, but the composition of the scar tissue, compared to the normal tissue, is different. Scar tissue also lacks elasticity unlike normal tissue which distributes fiber elasticity. Scars differ in the amounts of collagen overexpressed. Labels have been applied to the differences in overexpression. Two of the most common types are hypertrophic and keloid scarring, both of which experience excessive stiff collagen bundled growth overextending
Scar Tissue New Zealand and Canada, where it reached numbers three and four, respectively. "Scar Tissue" is considered to be representative of the new, more melodic rock sound the band experimented with on "Californication" (in contrast to the psychedelic "One Hot Minute", and dry funk of "Blood Sugar Sex Magik"). The song is notable for its mellow intro guitar riff and for its slide guitar solos throughout. "Guitar World" placed the guitar solo 63rd in its list of the "100 Greatest Guitar Solos". "Scar Tissue" won a Grammy Award for Best Rock Song in 2000. In 2004, Anthony Kiedis published "Scar Tissue".