Costume-clad kids and their parents fill the lobby of the UB Downtown Gateway for "Treats, Tricks and Discoveries."

Anari Stokes, age 4 (pink princess), and Javion Osorto (in blue lei), age 3, are ready for the party.

Pharmacy student Nick Bhasin — dressed as "a microbe, U. Bufalonius" — gives a demonstration on antibiotics and how they can be harmful to one's gastrointestinal tract and immune system. At his table are siblings Mia Muscato, age 9, and Nicholas Muscato (teenage mutant turtle), age 6.

Daionna Stephens, age 1, creates pumpkin art.

Jumana Badar, a second-year UB master's student, shows Jade Askew and Jase Askew, ages 7 and 4, how to study the veins in a leaf using a small microscope.

UB physical therapy student Alaina Militello (in grass skirt) teaches Da'Zay Mattison (dressed as a witch) and her dad, Edward Mattis, about movement and exercise at the "Moving with Moana" table.

Physician assistant Jackie Giamm, who works at the Mercy Hospital emergency room, applies Halloween makeup to Anari Stokes' face. The result: a freehand yellow cat.

Danielle Balling (white coat), a community recruitment liaison with UB's Clinical and Translational Science Institute, teaches kids about surveys. The kids were asked which chocolate cookie stuffed with creme they preferred.

UB physical therapy student Alaina Militello (in grass skirt) works with kids to teach them about movement and exercise at the "Moving with Moana" table.