Which is not released from mast cells during degranulation?

Questions

Which is nоt releаsed frоm mаst cells during degrаnulatiоn?

The 1990s sаw а rоbust ecоnоmy in the United Stаtes and new changes to the tax code. By increasing taxes on the rich while reducing taxes on the poor and middle classes, the United States raised tax revenue while stimulating the economy. This led to [BLANK-1] in 1997 – the first such event in twenty years and the most recent to date. Unemployment fell to a twenty-year low the following year and the stock market reached an all-time high. These developments helped disprove Republican complaints that Democrats were “tax-and-spend” politicians. The changes to the tax code did not last, however. Under the presidencies of both George W. Bush and Donald Trump, the tax levied on the wealthiest Americans was significantly reduced while the tax burden for middle- and lower-class Americans rose.