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Figure 2 | Arthritis Research & Therapy

Figure 2

From: IL-1ra delivered from poly(lactic-co-glycolic acid) microspheres attenuates IL-1β-mediated degradation of nucleus pulposus in vitro

Figure 2

Microsphere characterization and interleukin-1 receptor antagonist (IL-1ra) release kinetics. (a) Microsphere morphology upon fabrication as viewed under scanning electron microscopy. (b) Cumulative release of IL-1ra from microspheres suspended in phosphate-buffered saline under gentle agitation over 35 days. Each data point is the mean ± standard deviation of three separate aliquots of microspheres in suspension. The dashed line represents a power series curve fit to the raw data. The power series curve is defined in the 'Microsphere morphology and IL-1ra release kinetics' section of the text.

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Arthritis Research & Therapy

ISSN: 1478-6362

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