1. Precursor B Cells Showing H Chain Allelic Inclusion Display Allelic Exclusion at the Level of Pre-B Cell Receptor Surface Expression 
Edwin ten Boekel, Fritz Melchers, Antonius G Rolink 
Immunity 
Volume 8, Issue 2, Pages (February 1998)
DOI: /S (00)

2. Figure 1
FACS Profiles of 38B9 Cells Transfected with μ Chains Encoded by Both Productively Rearranged Alleles from Three VDJ+/VDJ+ PreB-II Cells
(A) Detection of cell surface expression of the transfected μ chains (FL1). Cell numbering is the same as in Table 3. The transfected cells were also stained in the cytoplasm and on the cell surface with a κL chain–specific mAb for the possible expression of 38B9 cell-endogenous expression of κL chains. All transfectants were found to be negative in both assays (data not shown).
(B) Cytoplasmic expression of the transfected μ chains (FL1).
Immunity 1998 8, DOI: ( /S (00) )

3. Figure 2
Early Precursor B Cell Compartments in the Bone Marrow of Normal and λ5-Deficient Mice
c-Kit+CD43+CD25− preB-I cells undergoing a productive VHDJH rearrangement enter the pool of c-Kit+cμ+ cells. Pairing of this μH chain with the SL chain leads to the formation of a surface-expressed preBcR, resulting in down-regulation of c-Kit and up-regulation of CD25. Hence, these cells enter the pool of large preB-II cells.
Immunity 1998 8, DOI: ( /S (00) )