The studies mentioned above and our work show that this idea is wrong: in some cases, learning a particular color may occur after few trials, but in other cases with perceptually similar stimuli it may need many more trials incorporating aversive conditioning.
This may occur with few clinical manifestations until most of the peripheral airways are occluded [ 21].
Fetal ductal constriction may occur after few hours after maternal administration, and its action may last for several weeks.
Spontaneous recovery may occur within a few months to a year.
Death may occur within a few days or the illness may become chronic, the animal being a possible source of infection to other pigs.
This may occur when a few colonizers reach a geographically separate habitat, perhaps an island, lake, river, isolated valley, or mountain range.
For aminoglycosides, renal impairment may occur after a few days of treatment; therefore, treatment duration should be limited to 48-72 hours and should not exceed 5 days.
Alternatively, an ECF may occur within a few weeks or months after IBD surgery, often through a previous abdominal scar and without residual or recurrent disease; clinically, this situation is commonly associated with limited physical findings due to use of steroids or immunomodulators.
Reports suggest alligator gars were once numerous throughout much of their northern range, however valid sightings today are rare, and may occur once every few years.
Post-transcriptional modification is simpler than in eukaryotes, since most archaeal genes lack introns, although there are many introns in their transfer RNA and ribosomal RNA genes, and introns may occur in a few protein-encoding genes.
