Table I.

Primer sequences for genes used in reverse transcription-polymerase chain reaction experiments.

Gene	Forward primer	Reverse primer
β-actin	5′-AGAAAATCTGGCACCACACC-3′	5′-CTCCTTAATGTCACGCACGA-3′
IL-8	5′-ACATACTCCAAACCTTTCCACC-3′	5′-AAAACTTCTCCACAACCCTCTG-3′
IL-8RA	5′-GACCTACTCTTTGCCCTGAC-3′	5′-AACACCATCCGCCATTTT-3′
IL-8RB	5′-GGAAACTCCCTCGTGATG-3′	5′-CAGGAATGTGCCAAAAAT-3′
ERK	5′-CTTCTCGCCTCAGTTCGC-3′	5′-CTCCTGGATGCTTGTCTGGTAA-3′
NUMB	5′-AAACGCCAACTATCCCTACGC-3′	5′-AGCACCAGAAGATTGACCC-3′

IL, interleukin; ERK, extracellular-signal-regulated kinase; NUMB, endocytic adaptor protein.