Many bacteria are surrounded by a polysaccharide capsule, which both provides the antigens against which antibodies can act, the molecules that largely determine how virulent and pathogenic the organism and protects the main bacterial cell from the bodies defense systems.
helping to improve; promoting further development or advancement (opposed to destructive): constructive criticism. 2. of, relating to, or of the nature of construction; structural. 3. deduced by inference or interpretation; inferential: constructive permission.
Difference Between Constructive and Destructive Interference. Constructive interference and destructive interference are two concepts widely discussed in waves and vibrations. Constructive interference is the phenomenon where two waves interfere so that the resulting amplitude is greater than the amplitude of each individual wave.