This was also combined with surface markers and CT registration.

The diver may tow a surface marker buoy if conditions allow.

If a surface marker is used, slack in the line should be kept to a minimum to avoid entanglement.

Gone are skin, pores, and hair, all the surface markers that make a man seem unique.

It can be placed on a boat or on a surface marker buoy.

However, surface markers can still be used to a certain extent to remove most of the unwanted differentiated cells.

Cytochemistry Immunocytochemistry for all surface markers was performed on live cells.

Once deployed, the use is identical to that for the standard surface marker and reel.

Another use is for putting air into a delayed surface marker buoy or lifting bag.

There may be local rules pertaining to the use of surface marker buoys.