Final answer:
The byproduct of an infectious process consists of interstitial fluid, elements of blood plasma without plasma proteins, white blood cells, and potentially new viral particles in the case of viral infections.
Step-by-step explanation:
The byproduct of the infectious process is a fluid composed predominantly of interstitial fluid, which includes components like water, amino acids, sugars, fatty acids, salts, and various cellular waste products. This byproduct may vary in composition depending on the tissue and location within the body.
Blood plasma without plasma proteins is a major constituent, along with white blood cells that combat infection, such as in the case of lymph fluid. During an infection, such as with viruses, new viral particles are also released into this fluid, which can then go on to infect other cells.