In the form of gene therapy used successfully for severe combined immunodeficiency syndrome (SCID)-X1, the genetic engineering of human cells is done by _____
A) injecting engineered viruses into the patient's bloodstream
B) injecting engineered viruses into the patient's bone marrow
C) treating a relative's cultured bone marrow cells with genetically engineered viruses and then injecting these cells into the patient's bone marrow
D) isolating the patient's bone marrow cells, infecting them with genetically engineered viruses, and injecting them back into the patient's bone marrow
D
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According to the phylogenetic tree showing evolutionary relationships among viruses in Figure 13.6, which one of the following is most closely related to the human lentivirus HIV2?
A. a horse lentivirus B. another human lentivirus C. a cow lentivirus D. a simian lentivirus E. a cat lentivirus
Which of the following processes is able to
move heat away from the body and is used by humans? a. convection b. evaporation c. conduction d. radiation e. collection
Which one of the following is NOT required for transcription?
A. RNA polymerase. B. DNA. C. Uracil nucleotides. D. Ribosomes. E. All of these are needed for transcription.
The most common type of transplant involves an (allograft/autograft/isograft)
What will be an ideal response?