GB name relay teams for Bahamas
Christine Ohuruogu and Dwain Chambers have been included in a 24-strong Great Britain team for the inaugural IAAF World Relay Championships.
Britain will send men's and women's teams in the 4x100 metres and 4x400m to the event in Nassau, Bahamas on May 24-25.
The top eight teams in the events will automatically qualify for the 2015 World Championships in Beijing.
World indoor 60m champion Richard Kilty is in the 4x100m squad with Chambers, but James Dasaolu and Adam Gemili are not on the team.
Dasaolu, the second fastest Briton in history, is concentrating on working on his fitness after the hamstring injury which ruled him out of the World Indoor Championships, while Gemili has university exams.
World 400m champion Ohuruogu's younger sister Victoria joins her on the 4x400m team.
British Athletics performance director Neil Black said: "These championships provide a vital opportunity to prepare teams capable of winning medals at this year's European Championships and future senior major championships.
"The team selected is a blend of experience and youth and one that I am sure will rise to the occasion of this unique format.
"These championships also provide a good opportunity for our relay squads to qualify for the 2015 World Championships."
Great Britain Team for IAAF World Relay Championships
Harry Aikines-Aryeetey, Dwain Chambers, James Ellington, Richard Kilty, Andrew Robertson, Danny Talbot
Desiree Henry, Hayley Jones, Anyika Onuora, Asha Philip, Bianca Williams, Jodie Williams
Dan Awde, Michael Bingham, Jamie Bowie, Nigel Levine, Martyn Rooney, Conrad Williams
Margaret Adeoye, Eilidh Child, Shana Cox, Emily Diamond, Christine Ohuruogu, Victoria Ohuruogu.