Embodiments of the present invention generally relate to proteins derived from white spot syndrome virus, nucleic acid sequences encoding them, and their use in the manufacture of a vaccine for prophylaxis andor treatment of white spot syndrome in crustaceans. The flexoelectric composite comprises a first material, which may be substantially isotropic, the first material being present in a shaped form. The implement also includes an attachment structure for attaching the absorbing component to the squeegee adjacent the wiping blade so as to allow the absorbing component to absorb liquid emanating from the wiping blade. A statistical perturbation model is constructed to describe degradation characteristics of the extracted features from the second database as provided in the editing step.