Table 1.

Single and collective migration pattern of breast carcinoma cells on PL, FN, or LN substrata in the absence or presence of SSP after 24 h.

	Single-Cell Migration									Collective Cell Migration (Individual Border Cells)
Substratum	PL			FN			LN			PL
SSP	no	yes		no	yes		no	yes		no	yes
Cell line
MCF-7	-		++	-		++	++		+	+	+
MDA-MB-231	++		++	++		☠	++		+/-	++	+
SK-BR-3	+/-		+/-	++		+/-	++		+	+	+/-

-: velocity ≤ 1.5 μm/h; +/-: velocity ≥ 1.5 ≤ 2.0 μm/h; +: velocity ≥ 2.0 μm/h ≤ 5.0 μm/h;

++: velocity ≥ 5.0 μm/h; ☠: cell death.