Sponge Genes Hint at the Origins of Neurons and Other Cells

In fact, many multifunctional cells in sponges express modules of genes usually associated with specialized cells in more complex animals like vertebrates. For example, sponge neuroid cells not only express some of the presynaptic machinery of neurons, but also express immune genes. (It’s possible that if neuroid cells monitor the microbial content of the digestive […]

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