Neisseria gonorrhoeae is a type of bacteria. OpaCEA is a bacterial adhesin found on the surface of Neisseria gonorrhoeae that binds the CEACAM receptor (carcinoembryonic antigen-related cellular adhesion molecules) on the surface of human cells.
OpaCEA-expressing Neisseria gonorrhoeae refers to the N. gonorrhoeae that expresses OpaCEA.