Several types of EIA tests exist. 1  Validated and FDA-approved EIAs include âELISAâ (enzyme-linked immunosorbent assay) and âELFAâ (enzyme-linked fluorescent immunoassay). Lyme disease testing measures a person's antibody (or immune response) to the bacteria that cause Lyme disease.
Yellow Rattle (Rhinanthus minor) is a parasitic plant that can help to restrict grass growth. It can be oversown into an existing grass area, and it will start to feed off the plant roots, meaning that the grasses become less dominant, allowing wildflowers to establish more easily.ellow Rattle (Rhinanthus minor) is a parasitic plant that can help to restrict grass growth. It can be oversown into an existing grass area, and it will start to feed off the plant roots, meaning that the grasses become less dominant, allowing wildflowers to establish more easily.
However, large populations can turn leaves yellow and stunt shoots; aphids can also produce large quantities of a sticky exudate known as honeydew, which often turns black with the growth of a sooty mold fungus. Some aphid species inject a toxin into plants, which causes leaves to curl and further distorts growth. A few species cause gall formations. Aphids may transmit viruses from plant to plant on certain vegetable and ornamental plants. Squash, cucumber, pumpkin, melon, bean, potato, lettuce, beet, chard, and bok choy are crops that often have aphid-transmitted viruses associated with them. The viruses mottle, yellow, or curl leaves and stunt plant growth.