[62]There was also a sharp transient increase in plasma cells in peripheral blood around day 10 of the secondary infection. In both primary and secondary infections, the MSP1-specific ASC mirrored the CD138+ PC in kinetics, but at substantially lower frequencies. In contrast, the dynamics of total PC in bone marrow was different; CD138+ PC accumulated and were present for up to 90 days (the period of observation), whereas MSP1-specific ASC were observed for up to 20 days after secondary infection (the period of observation). The gene discussed is SDC1; the disease is infection.