Identification of Aberrantly Expressed Genes during Aging in Rat Nucleus Pulposus Cells

Figure 1

The cell morphology and immunophenotype identification of young and old NPCs. (a) Cell morphology of P2 young and old NPCs. (b, c) Both young and old NPCs exhibited high expression of CD29 and CD90 (>95%) and low expression of CD34 and CD45 (<5%). The expression of CD24 in the young group was and in the old group was . The difference of CD24 expression between young and old NPCs was significant (). compared with the young group.

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