See Also: Guard Beam - Motor Sports(gambling)
I-Beam Suspension - Motor Sports(gambling)
Sealed Beam - Motor Sports(gambling)
Guard Beams - Motor Sports(gambling)
Twist Beam Axle - Motor Sports(gambling)
Twist-Beam Axle - Motor Sports(gambling)
Lights, Projector Beam - Motor Sports(gambling)
Projector-Beam Headlights - Motor Sports(gambling)
Bracer, Archer' s Guard, Arm Guard - Archery(gambling)
beam-beam reaction(medicine)

Guard Beam - Motor Sports (gambling) and Ir gene (medicine)


Guard Beam - Motor Sports (gambling)


A light beam-to-photocell commection located 16 inches past the stage beam that is useed to prevent a competitor from gaining an unfair starting-line advantage by blocking the stage beam with a low-installed object such as an oil pan or header collector pipe. If the guard beam is activated while the stae beam is blocked, the red foul light is triggered on the Christmas Tree, and the offender is automatically disqualified.

Ir gene (medicine)


Ir gene
Immune response genes, located within the MHC of vertebrates. Originally recognised as controlling the level of immune response to various synthetic polypeptides, they are now also recognised as mapping within the regions controlling T-cell help and suppression (I region).