(1942) used FITC-labeled antibodies to identify Pneumococcal antigens in infected tissue. Since then, improvements have been made in protein conjugation, tissue fixation methods, detection labels and microscopy, making immunohistochemistry a routine and essential tool in diagnostic and research laboratories.
Check daily for germination. Onion seeds germinate in five to 14 days, depending on the cultivar and the soil temperature. Move to a sunny location and keep the tops trimmed to a height of 4 inches. Keep soil moist.
Onions are categorized according to day length; how much daylight there is when onions stop forming tops, or new green leaves and start making bulbs. SHORT DAY ONIONS: Begin forming bulbs when the day length is 10 to 12 hours. (Tend to do better in the south and west.) 'Granex' - Large, globe-shaped, sweet onions sometimes called the Vidalia onion.