Sometimes even the whiff of co-opetition can cause other firms to cry foul as Microsoft did a few months ago when it emerged that Yahoo!, an internet firm, was planning to outsource a chunk of its search-advertising business to Google, its main rival.
Presentation of antigen in MHCs without co-stimulation can cause T cells to become inactive or promote regulatory functions.
This co-infection can cause major impact in children, pregnant women and in HIV-infected patients [ 6].
Infection with PCV2 in combination with still unknown co-factors can cause immunopathological disorders such as PMWS, or induce protective immunity.
Acute exposure to high levels of CO (>100 ppm) can cause headaches, dizziness, vomiting, and loss of consciousness (CDC 2013).
A transfusion introduces new antigens as Histocompatibility antigens (HLA) which interact with native T-cells as well as molecules called co stimulators that can cause a suppression of immune response [ 10].
In addition, the resin composite co-monomer, TEGDMA, can cause gene mutation in vitro [5 7].
However, co-infused AA can cause adverse effects such as vomiting, nausea, and hyperkalemia [10, 15, 17 19].
Loss-of-function mutations in Norrin (an unconventional Wnt ligand), Wnt receptor Frizzled 4 (FZD4) or co-receptor LRP5, can cause familial exudative vitreoretinopathy (FEVR) in humans [4], [5], [6].
