Table 3.

Comparison data of transverse section view of prismatic layer fragments.

Testacean drug	Species	Transverse section view of prismatic layer fragments
Length (μm)	Width (μm)
Haliotidis Concha	H. diversicolor	18–52	6–20
	H. discus	15–50	4–12
	H. ruber	17–40	7–20
	H. asinina	25–85	5–17
	H. laevigata	20–70	6–12
Margaritifera Concha	H. cumingii	40–112	8–23
	C. plicata	45–200	17–50
	P. martensii	24–78	6–30
Ostreae Concha	O. talienwhanensis	33–72	6–22
	O. rivularis	15–100	7–20