ACVR2	Activin receptor type 2
ACVR2B	Activin receptor type 2B
ALK4 or 5	Activin receptor-like kinase 4 or 5
BCA	Bicinchoninic Acid
C26-CM	Colon 26 carcinoma cell conditioned medium
C/EBPβ	CCAAT-enhancer-binding protein β
DM	Differentiation medium
DMEM	Dulbecco´s modified Eagle´s medium
ERK1/2	Extracellular signal-regulated kinase 1/2
FBS	Fetal bovine serum
GDF	Growth differentiation factor
GM	Growth medium
HS	Horse serum
IL-6	Interleukin-6
MAPK(s)	Mitogen-activated protein kinase(s)
MCP-1	Monocyte chemoattractant protein-1 or CCL2
PBS	Phosphate buffered saline
P/S	Penicillin-streptomycin
RANTES	Regulated on activation, normal T cell expressed and secreted or CCL5
SAPK/JNK1/2	Stress-activated protein kinase/c-Jun N-terminal kinase 1/2
STAT3	Signal transducer and activator of transcription 3
Smad3	Small mothers against decapentaplegic 3
TGF-β	Transforming growth factor-β