The most common is a tube running from outside of the vacuum bed into the person's mouth.
Other tubes ran from bags of solutions down into his arms.
The professor could see Logan on the table across the lab, tubes running from his arms.
The tube ran to a vein above his left wrist.
The tube ran to a drip bottle on a stand.
Several much smaller tubes, also square, would run at the top and bottom to strengthen it.
He saw a metal and porcelain machine with tubes running from it.
He was lying face up on a special bed, with tubes running out of his lower body into various bottles and machines.
Those tubes have been running on a maintenance load for days.
I just happened to notice that there was a tube running from the car to the heating pipe.