The train carriage in which seven people died in the bombing at Edgware Road has been removed from the track.
The carriage has been taken away for further examination
A crane lifted the carriage, which was wrapped in blue tarpaulin, at about 2200 BST on Tuesday and lowered it onto a flatbed lorry in Chapel Street.
Its removal shows the forensic search of the Circle Line scene is nearing its end after the blast on 7 July.
The sealed carriage, weighing about 20 tons, was being taken to a police compound for further examination.
The bomb, one of four blasts on the Tube and a London bus, was located in a standing area near the first set of double doors, police have said.
A Metropolitan Police spokesman said the removal was carried out by contractors on behalf of Transport for London.
"Until today it has been a full crime scene so everything has remained as it was. There has been removal of bodies," he said.
Elsewhere on London Underground, sniffer dogs have been introduced to detect explosives in the wake of the London bomb attacks.
Dogs were already being used on the Tube in east London to look for drugs and on the Heathrow Express to find explosives.
Better than machines
Now the team of 28 dogs is being used across the Tube network, and will continue to be used "indefinitely", British Transport Police (BTP) said.
The spokesman added: "They operate just like dogs who search for drugs except they have been trained to sniff out explosives.
"They [the dogs] are far more effective than any machine."
Meanwhile engineers are repairing the damage at Aldgate, where a bomb on the Circle Line killed eight people.
Aldgate Tube station could be open and a full Metropolitan Line service restored by Monday.
But police remain in control of Russell Square, scene of the most deadly blast, where the damage was much worse than the two other bombed Tube lines.
London Underground said it will be several weeks before a full Piccadilly Line service can be restored.
Fifty-six people died in the blasts in Tavistock Square, Edgware Road, Liverpool Street and King's Cross on 7 July.
More than 700 other people were injured in the explosions.