A chemical agent able to cause or determine morphogenesis.
- The Hedgehog proteins are secreted morphogens that provide positional information during the development of many multi-cellular animals.
- He suggested that biological forms mirror patterns in the concentrations of hypothetical chemicals called morphogens.
- For example, many morphogens - molecules that direct cells to grow and differentiate during embryogenesis - are not water - soluble, so biologists know little about how they spread out during early development.
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