From the article: > Dietz said the interior of the shells were coated with "antibodies specific for the hepatitis-B virus. You can think of the shells as a gen

From the article: > Dietz said the interior of the shells were coated with "antibodies specific for the hepatitis-B virus. You can think of the shells as a generic platform; depending on your selection of inner coatings, you can 'program' them to be specific for a user-defined target virus."