Assertion: alkaloid's effect | /r/HasProperty | observed for the transcription factors
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text: The effect of the β-carbolines on cellular proliferation and differentiation is not unique to these compounds, having been observed for endogenous molecules such as leukotriene B440, BMPs41, the growth factors EGF/FGF242, and NGF/BDNF/bFGF43, and the transcription factors Lmx1a and Lmx1b44.