(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.
Wait until about 85% of the tops are fallen over for traditional onions. Then go ahead and bend over the rest. Leave the onions in the ground for 10-to-14 days so they can mature. Choose a sunny, dry day to harvest.