Appendix 1—table 1. Multiplexed chemotaxis device (MCD) microchannel resistance and dimensions (corresponding to Figure 1—figure supplement 2f).

Channel	Resistance(mPamPa.s. μm-3)	Height(μm)	Width(μm)	Length(mm)
$R_{0,2}$	0.0082	90	90	19.06
$R_{1,1}$	0.0095	90	90	22.08
$R_{2,1}$	0.0147	90	90	34.06
$R_{3,1}$	0.0201	90	90	46.43
$R_{4,1}$	0.0277	90	90	64.13
$R_{5,1}$	0.0300	90	90	69.45
$R_{0,4}$	0.0201	90	90	46.50
$R_{1,4}$	0.0149	90	90	34.54
$R_{2,4}$	0.0098	90	90	22.60
$R_{3,4}$	0.0046	90	90	10.76
$R_{\text{B}}$	0.0035	90	150	19.93
$R_M$	0.0043	-	200	40.7
$R_{4,4}$	7.7 × 10−4	90	-	-
$R_{\text{CIL,1}}$	0.0575	75	75	64.24
$R_{\text{CIL,2}}$	0.0142	75	75	15.89