[问答题]
1.Describe how the use of stem a:-hjeg a5/kmtz3v3 v cells may be used to trv,5) j*k i,1 euwtznjkeat type I diabetes in the f5 u)i*k1,j ewzkv,tnj uture.
2.Explain the factors that limit cell size in humans.
3.Explain how red blood cells and striated muscle fibres are adapted to their function.