Alongside the C-type lectin domain of the collectins [ 16] and the leucine-rich repeat of the Toll-like receptors (TLRs) [ 17], the SRCR domain is one of the most ancient pattern recognition domains associated with innate immunity [ 18].
In particular, antigen presenting cells, such as dentritic cells (DCs), can engage infectious components with their Toll-like receptors (TLRs) (a group of ancient immune recognition molecules) leading to activation of adaptive immune responses and induction of regulatory cells and mediators [ 92, 93].
The evolutionarily conserved minimal introns may preserve the ancient intron-recognition pathway, while the large introns in vertebrates have been evolved to use the exon-recognition pathway.
The youngsters called themselves the Ancients in recognition of the fact that they were in love with an art that felt as old as time itself.
The ancient but persistent recognition of the power of language is apparent in the respect for correctness in the use of language in any sphere of life having supernatural connections.
While it may lack the name recognition, ancient roots and drop-dead beauty of its more glamorous cousins — like the Old Course at St. Andrews, the birthplace of golf; Muirfield, home of the Honourable Company of Edinburgh Golfers; or Turnberry, home of the lighthouse and ruins of Robert the Bruce castle — history is writ large on this linksland.
The castle is protected against unauthorised change as a Scheduled Ancient Monument in recognition of its status as a "nationally important" archaeological site or historic building, and is a Grade I listed building together with its boundary walls, stables, conservatory, mill and lodge.
The use of "positive" and "negative" to partition affective states is decades older; the idea of such partition is ancient and so is recognition of its difficulties and subtleties.
Christians have either waited with melancholic expectancy for Christ's return or repeated the warring mistakes of his predecessors: using violence over peace to enact legalistic recognition of ancient moral codes.
Our work in C. elegans demonstrates that the RIG-I domain has an ancient role in viral recognition.
