Developmental Biology Glossary

noun a type of signaling molecule produced by Dictyostelium discoideum cells during development

• Acrasins are signaling molecules that Dictyostelium cells use to communicate during development.
• Do you know what acrasins are? They're like little messengers that tell cells what to do.
• I heard acrasins are like the bossy texts that cells send each other.
• Acrasins are like the secret agents of the cell world, passing on important messages for survival.

noun small tentacle-like structures found on certain marine invertebrates

• The actinulae are specialized structures found in certain marine invertebrates.
• I read about actinulae in my marine biology class.
• Those actinulae thingies are pretty cool, huh?
• The actinulae of society are the individuals who stand out and make a difference.