HSCs begin their life in close contact with osteoblasts located close to the lining of the endosteal cavity. Once differentiated to the pre-pro-B-cell stage, the developing B cells require Which type of signals from the chemokine, which is secreted by a specialized set of stromal cells?

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#Question id: 20179

#XL - P Chemistry

The third line of the Balmer series. in the emission spectrum of the hydrogen atom, is due to the transition from the

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#Question id: 20180

#XL - P Chemistry

The highest number of unpaired electrons are w present in

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#Question id: 20181

#XL - P Chemistry

Rutherford’s atomic model suggests the existence

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#Question id: 20182

#XL - P Chemistry

Which is not true with respect to cathode rays?

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#Question id: 20183

#XL - P Chemistry

A element M has an atomic mass 19 and atomic number 9. Its ion is represented by

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#Question id: 20184

#XL - P Chemistry

Which of the following ions has the maximum magnetic moment ?