(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.
Choosing when to plant the onion sets depends not only on where you live but what kind of onion is planted. Long day onions require days of 15 to 16 hours of sunlight to bulb, which means they grow the best in northern regions. Long day onions need about 120 days to mature.Short day onions need 12 hours of sunlight to bulb; they do the best in southern regions and mature in about 85 days. Additionally, leave both kinds of onions in the ground for an additional week to two weeks, to cure.ong day onions need about 120 days to mature. Short day onions need 12 hours of sunlight to bulb; they do the best in southern regions and mature in about 85 days. Additionally, leave both kinds of onions in the ground for an additional week to two weeks, to cure.