A.signals from the shield region
B.maternal signaling molecules laid down in the egg
C.a gradient of β-catenin signaling
D.a gradient of Nodal signaling
A.FGF
B.Hedgehog
C.TGF-β
D.Wnt
A.MAP
B.BSSAP
C.OMAP
A.MAP,TCAP
B.TCAP,SCCP
C.MTP,SCP
A.ecdysone
B.FGF
C.HiPPo
D.insulin/IGF-1
A.To set the initial value of the timer that inhibits handover after a change of channel
B.To set the initial value of the timer that controls the measurement events of the mobile
C.To set the initial value of the timer that controls if handover during signaling is allowed or not
D.To set the initial value of the timer that controls if handover to another BSC is allowed or not
E.To set the initial value of the timer that controls the filtering process