CD28 homodimer binds B7-1 homodimer (Xenopus tropicalis)
cd28 homodimer binds b7-1 homodimer (xenopus tropicalis)
CD28 homodimer binds B7-1 homodimer (Xenopus tropicalis)
cd28 homodimer binds b7-1 homodimer (xenopus tropicalis)