Table 1 Variables and parameters

A

Expression of transcription factor Hnf6

1

0

X

Expression of transcription factor Ngn3

0

0

Y

Expression of transcription factor Ptf1a

0

1

Z

Expression of transcription factor Isl1

0

0

$\bar{X}$

Average Ngn3 expression in neighboring cells

0

0

$\bar{Y}$

Average Ptf1a expression in neighboring cells

0

1

a

Strength of lateral inhibition X⊩⊣X

1000

b

Strength of lateral stabilization Y⇔Y

2000

c

Strength of inhibition X⊣Y and Z⊣Y

500

q

Strength of induction A→X and A→Y

10⁻⁴

r

Strength of inhibition Y⊣A and Z⊣A

100

s

Strength of autoactivation Z→Z

50

n

Hill coefficient, nonlinearity of reactions

3

η _x

Noise amplitude on X

10⁻³

η _y

Noise amplitude on Y

10⁻³