Characterization of gastric cancer models from different cell lines orthotopically constructed using improved implantation techniques

Table 1 Comparison of primary tumor and related characters in the two models

Items		SGC-7901 group	BGC-823 group
Primary tumor	Shape	Irregularly lobular	Irregularly lobular
	Color	Grayish yellow	Gray-white
	Texture	Stiffer	Softer
	Vascularity	Rich	Richer
Section of stomach tumor	Gastric cavity	Narrow or vanished	Narrow or vanished
	Greater and lesser curvature	Undistinguishable	Undistinguishable
	Pylorus	Partly or totally obstructed	Totally obstructed
Effects on adjacent organs	Abdominal cavity	Occupying whole abdomen	Occupying upper abdomen
	Adhering extent	Adhering to liver lobes	Adhering to many organs
	Compressed status	Severely compressed	Partly compressed
Ascites	Liquid quantity	Little	Much
	Property	Clear and yellowish	Bloody fluid

Table 2 Comparison of metastatic rates in models of SGC-7901 and BGC-823, n/N (%)

Groups	Site and incidence of metastasis
	Lymph nodesa	Liver	Kidneya	Lung	Spleenb	Testiclea	Peritoneum or septum
SGC-7901	7/12 (58)	10/12 (83)	5/12 (42)	1/12 (8)	0	0	10/12 (83)
BGC-823	12/12 (100)	12/12 (100)	10/12 (83)	5/12 (42)	7/12 (58)	5/12 (42)	12/12 (100)

^aP < 0.05,

^bP < 0.01.