undifferentiated hematopoietic stem cells would not express surface markers specific for mature cells from the multiple blood lineages (“Lin” markers). They used several approaches to eliminate cells in the bone marrow that did express these markers (Lin+ cells) and then examined the remaining (Lin+) population for its potential to continually give rise to all blood cells over the long term. Lin- cells were, indeed, enriched for this potential. what marker is   express If cells inter in lymphoid lineages?

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#Question id: 1059

#Unit 4. Cell Communication and Cell Signaling

A limiting factor for viral infection is

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#Question id: 1062

#Unit 4. Cell Communication and Cell Signaling

Using phages to treat a bacterial infection is an interesting idea because

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#Question id: 15783

#Unit 5. Developmental Biology

During the formation of induced pluripotent stem cell, what is the function of Klf-4?

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#Question id: 19362

#Unit 13. Methods in Biology

What is the size of fragments that can be obtained by using a phagemid vector?

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#Question id: 5820

#Unit 8. Inheritance Biology

A new chemical pesticide developed for agricultural use was subjected to the Ames test. The rate of mutation seen in samples treated with the pesticide and liver extract was approximately half that of the samples treated with the liver extract alone; in samples treated with only pesticide, the mutation rate was about the same as that of untreated samples. Which of the following statements could you make about this pesticide?