Or it can use its suckers to hold onto preferred objects, or to push repulsive ones away.
As detailed in the Supporting Information S1, our results show that in the high concentration region of the CCL19 and CCL21 gradients, cells exhibit repulsive migration away from the gradients; In contrast, in the low concentration region of the CCL19 and CCL21 gradients, cells chemotax to the gradients; in the middle region of the gradient fields, cells migrate randomly.
Wnt5a applied as a gradient from a pipette increased axon outgrowth rates (averaging 20 µm/h) and induced repulsive axon turning away from the Wnt5a source (average turning angle –23°, n = 25 axons) as previously described (Li et al., 2009).
A universitylecturer (and lech) once gave me a copy of DH Lawrence's The Woman Who Rode Away, a repulsive fantasy about male domination.
Furthermore, an attractive EM pushing force on the active source directed toward the boundary or a repulsive pulling one pointing away from it can arise accordingly.
His extreme, bigoted stances and repulsive personality will drive away virtually every demographic except for the most ignorant white racists and the greediest plutocrats.
Mammalian Ryk is used by corticospinal axons to grow caudally within the spinal cord, away from repulsive sources of Wnt [4].
Previously, we found that bath applied Wnt5a increases cortical axon outgrowth and that Wnt5a gradients evoke repulsive growth cone turning away from the Wnt5a source simultaneous with increased outgrowth rates (Li et al., 2009).
They all combine this with quantitative measures of behavior and modeling to address the mechanisms that underlie how animals orient toward attractive stimuli (and away from repulsive stimuli), and show how the animals negotiate shifting stimulus landscapes.
When he admitted responsibility, "she just turned away with a repulsive sort of look," he said.
