what is hardening of muscles called
Hardening and thickening of the heart muscle, known as hypertrophic cardiomyopathy, is often the result of genetic inheritance, according to MedlinePlus. Defects and mutations in the genes that... Hardening and thickening of the heart muscle, known as hypertrophic cardiomyopathy, is often the result of genetic inheritance, according to MedlinePlus. Defects and mutations in the genes that... Star Gazing