Cells respond to viral infection by activating a class of enzymes which mutate the viruses until they can no longer function.
The two immediate early products, BZLF1 and BRLF1, promote each other expression, transactivate separate classes of EBV lytic genes and together synergize to activate a third class of lytic genes.
We find that sensory neurons that detect female pheromones, but not male pheromones, activate a novel class of neurons in the ventral nerve cord to cause activation of P1 neurons, male-specific command neurons that trigger courtship.
fMLP binds and activates a class of G-protein-coupled receptors.
When the skin is torn, enzymes break the compound down into sugar fragments that activate an unusual class of sensory neurons known as crypt cells in other fish.
F cells activate PPN1, a class of projection neuron with cell bodies and dendrites in the VNC and long-range axonal projections to the ventrolateral protocerebrum.
C3H/HeJBir mice, a substrain which develops spontaneous colitis, were used to identify a family of related novel flagellins, which activate TLR5, as a class of immunodominant antigens [ 67].
The memory trace was written by shining light into the fly's brain and activating a special class of cells involved in learning how to avoid an electric shock.
Whilst the stimulation parameters used here would likely activate all classes of fibre, we have also demonstrated that the predominant fibre type within this nerve corresponds to muscle afferents.
