His Polonaise No. 6 in A-flat major, op.53, titled “Heroic,” composed in 1842, is probably his best known and one of the most frequently performed works in the romantic piano repertoire. Pianist ...

but delayed reactions can be seen • Irritant reactions are characterized by the 'decrescendo phenomenon' • The reaction reaches its peak quickly, and then starts to heal • Sensitizing exposu ...

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