shankar jan
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This is what I know from my own knowledge (hopefully not wrong):

Growth factor - a substance, such as a vitamin or hormone, which is required for the stimulation of growth in living cells. (got this from internet)

Morphogens - a signalling molecule,..I guess it functions in the same way as a growth factor

Transcription factor-
rate of transcription of genes controlled by transcription factors

Transcription factors= proteins that bind to DNA & switch genes on/off to increase/decrease rate of transcription

There are 2 types of transcription factors: Activators-start transcription & Repressors-stop transcription

The attachment provides all these 3 terms and I am trying to see how they are all related and what differences there are between them.
In this attachment, it seems that they are indicating that morphogens and growth factors and transcription factors are the same thing.

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Would really like any views on this
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shankar jan
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