Long-term T-cell memory can be attributed to the following characteristics of memory T-cell populations compared with naive T-cell populations: an increased frequency of antigen-specific precursors ...
About AT&T Inc. Dep. Pfd. (Rep. 1/1000th 4.75% Pfd. Series C) AT&T, Inc. is a holding company, which engages in the provision of telecommunications and technology services. It operates through the ...
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