A patient received bone marrow modified by an adeno-associated virus (AAV) carrying a human gene that encodes an enzyme her body could not make. This is an example of
A) protein therapy.
B) germline gene therapy.
C) somatic gene therapy.
D) retroviral gene therapy.
C) somatic gene therapy.
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Which of the following is an important feature of carbon and that makes life possible?
A. Carbon can form a maximum of 8 covalent bonds. B. Carbon can form a maximum of 6 covalent bonds. C. Carbon can form a maximum of 4 covalent bonds. D. Carbon can form a maximum of 2 covalent bonds. E. None of the choices are possible for carbon.
The natural habitat of L. pneumophila is:
a. freshwater streams. b. the upper respiratory tract of humans and animals. c. the large intestine of humans and animals. d. foods contaminated by soil.
All of the following are germ layers EXCEPT
a. ectoderm. b. mesoderm. c. epiderm. d. endoderm.
Proteins are polymers of
1.amino acids. 2.fatty acids. 3.nucleotides. 4.monosaccharides.