Scientists are optimistic about the use of gene therapy to treat genetic disorders, such a cystic fibrosis. However, gene therapy is not currently approved for widespread use. The most significant reason that gene therapy is not approved is because it has failed to meet which of these criteria?

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

very

a compound light microscope is used to magnify objects in steps.  

hope it

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.