Table 1.

Recapitulation of droplet conditions, properties, and outcomes

Droplet condition	Oil phase	Surf tension (mN/m) [pendant drop]	Stiffness (kPa)	Functionalization type	Observed antigen enrichment	Antigen concentration	Droplet size (mean $\pm$ SD) (μm)	Polarization	No polarization		Anti-polarization
(i)	mineral oil oleic acid 5% v/v	1.7	4.0	surface	no	100	11.06 $\pm$ 0.88	+		+++	+
(ii)	mineral oil	4.7	11.7	surface	no	100	10.04 $\pm$ 1.92	+++		+	++
(iii)	soybean oil	12	29.8	surface	no	100	11.0 $\pm$ 0.7	+++		+	++
(iv)	soybean oil	12	29.8	surface	no	50	11.0 $\pm$ 0.7	+		++	+
(v)	soybean oil	12	29.8	bulk	yes	50	11.30 $\pm$ 2.88	++		+	++
Control, BSA	soybean oil	12	29.8	bulk	no	–	11.30 $\pm$ 2.88	–		+++	–