And I love that it's done with an absence of tricksy presentation or daft, hobbity vessels.
This is in contrast to the relative absence of antigen presentation detected by DN DC when the unfractionated population was analysed (Figure 5A,B).
Our findings presented here raise the possibility that phenotypic signs of CD4 and CD8 T cell activation can be induced by HIV in the absence of antigen presentation or TCR engagement.
The absence of this presentation from the transplant literature to date indicates it is likely to be a rare phenomenon but the effective safe intervention of rituximab warrants awareness.
Down-regulation of MHCI, B2M in skin and head kidney during 1-5, and 15 dpi, and MHCII in skin 15 dpi, suggested absence of antigen presentation to T-cells.
Functional connectivity, as measured by correlations between neuronal activity in the absence of stimulus presentation, is one way to monitor such network changes (Ts'o et al., 1986; Bair et al., 2001; Fujisawa et al., 2008).
If the valence of the learned odor were encoded by the altered activities of specific MBONs, artificial activation of those MBONs in untrained flies in the absence of odor presentation would be expected to result in avoidance or approach behavior that mimicked the conditioned odor response.
This lower accumulation in the brain was associated with an absence of cross-presentation of the SQLLNAKYL epitope by microvessels of PyYMluc-infected mice.
It remains to be seen whether the absence of cross-presentation can be generalized to all parasite antigens, and if so, which aspects of parasite biology or host response account for this difference.
In the absence of food, repeated presentation of the conditional stimulus alone will result in the gradual disappearance, or extinction, of its conditional response.
"We have been worried by the absence of debate, the presentation of faits accomplis," said Javier Solana, a former NATO secretary-general and now the European Union's chief foreign affairs official.
