Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
B lymphoid progenitor cells are found in lacZ-positive and -negative bone marrow fractions of SCLlacZ/w mice. Flow cytometric profiles of cells harvested from IL-7/NIH 3T3 cultures seeded with unsorted or sorted bone marrow fractions and labeled with directly conjugated antibodies against the B lymphoid antigen, B220, and the myeloid antigen, Mac-1.
