Essential Experimental Methods for Identifying Bonghan Systems as a Basis for Korean Medicine: Focusing on Visual Materials from Original Papers and Modern Outcomes

Table 1

The size of a Bonghan corpuscle and ductule determined by the Bonghan research team.

	Bonghan corpuscle			Bonghan ductule
	Internal	Intraexternal	Neural
Size	0.1–0.2 mm	Connecting to two Bonghan ducts; 0.3–1.0 × 0.1–0.5 mm	0.5–1.0 × 0.2–0.5 mm	Generally 5–15 μm
		Connecting to three or over Bonghan ducts; 0.6–2.5 × 0.3–1.5 mm		Totally 1–50 μm