(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.
Starting onion plants from seed takes the longest for onions to fully grow, but seeds give you the most choices in variety. It can take up to five months for plants to mature enough to harvest. When starting onion plants from seed, allow the soil temperature to warm to at least 50 degrees Fahrenheit before sowing.