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(genetic biology)

Grammar: noun
plural: morphogens
Definition: a chemical compound found in embryonic tissue which influences the organisation and position of cells during their growth and differentiation (morphogenesis)
Example:
1. Morphogens are secreted from specific points in the embryo, and in turn, induce the expression of other regulatory molecules like hunchback.

2. Homeobox genes are activated by triangulating morphogens in early stages of embryo development.