Cultural controls and nursery hygiene are essential — nematodes are readily spread by overhead irrigation or propagation mist ...

By this definition, stem cells are particularly important for plant growth, because virtually all tissues of the plant descend from small groups of stem cells located in their growing apices ...

These immunogens elicit cross-reactive antibodies to group 2 influenza viruses and could be used in combination with group 1 HA stem-ferritin immunogens as a universal influenza vaccine.