Table 2. HEp-2 Cell viability after 24-hour treatment with 10 or 100 μM concentration of the inhibitor compounds.

Compounds	Mean	Std error (±)
DMSO (Control)	96.0	4.18
SD-29 (100 μM)	92.7	2.38
SD-29 (10 μM)	94.0	5.79
SD29-14 (100 μM)	93.7	2.17
SD29-14 (10 μM)	97.5	2.06
SD29-12 (100 μM)	97.7	0.43
SD29-12 (10 μM)	92.7	3.96

The viability of cells was measured with Trypan blue exclusion assay in a Cellometer (Nexcelom, Lawrence, MA). The percentage survival of the compound treated cells was evaluated along with the DMSO treated cells. The values represent the mean ± SE of three separate well based replicates.