Table 1.

The Quality Control Criteria of EpiKutis^® Model

Items	Criteria
Apparent evaluation	Dry, flat, and no shrink.
	Intact epidermis construction
	1. Stratum basal layer;
Histological examination	2. Stratum spinosum layer;
(Hematoxylin and eosin stain)	3. Stratum granulosum layer;
	4. Multilayered stratum corneum.
Cell viability	1.0 ≤ OD570 ≤ 2.5
Barrier functiona	1 hrs ≤ ET50 ≤ 3 hrs

Note: ^aEstimated by ET₅₀, the exposure time required to reduce cell viability of EpiKutis^® by 50% when added 0.1% Triton-X100.