The phrase "appeared in circulation" is correct and usable in written English.
It can be used to describe something that has become available or is being distributed among the public, such as currency, literature, or information.
Example: "The new banknotes appeared in circulation last month, replacing the old designs."
Alternatives: "came into circulation" or "was released into circulation".
When silver prices plummeted in the mid-1870s, millions appeared in circulation, at first in the West and then throughout the United States, causing problems in commerce when banks insisted on the $5 legal tender limit.
This process is consistent with an observed drop in serum concentration of DNA (nucleosomes) at the time when anti-dsDNA antibodies appeared in circulation, as determined by real time PCR applied to serial serum samples from BW mice or to sera from human SLE patients.
Therefore, persons whose first exposure to H1N1 viruses was to the highly glycosylated re-emergent viruses that appeared in circulation after 1977 would have a much lower level of immunoprotection, and would be at risk for aberrant T-cell responses and severe lung disease from cytokine storm.
The Federal Reserve, which controls the money supply, determines exactly when the bills appear in circulation.
The first bills to feature Mr. Lew's signature will be five-dollar bills that will roll off the presses later this summer, and appear in circulation as early as the fall.
In an editorial also appearing in Circulation, Loscalzo writes, "[the findings] represent a proof of principle for vascular gene therapy".
Pharmacokinetic studies in CD1 mice show that after a single intraperitoneal injection (i.p ., the fusion protein rapidly appears in circulation and remained at a high level for more than a week.
It appears in circulation very early (first 1-2 h), being fundamental in the activation of SIRS.
Quite different from RBCs, every now and then, round and granule rich blood cells with strong THG contrast appear in circulation.
In the mouse CLP sepsis model, Tressel et al, found MMP1 appearing in circulation, just a few hours after CLP initiation.
It is well known that when adiponectin isoforms appear in circulation, they do not interconvert (22), and at the end of pregnancy, there seems to be a decline of adiponectin secretion by nonadipose tissues (23), whereas there is an increase of adiponectin secretion from adipose tissue that produces predominantly HMW-Ad.
