The tag cesium appears in these 3 comics:
- 1: (01/23/2012) The Exploding Trashcan (Tags: mike, chris, cesium, lab)
- 97: (10/26/2013) Level 100 reactivity (Tags: pokemon, mike, cesium)
- 232: (05/28/2016) Cesium 137 (Tags: mike, ashley, carlos, marty, abigail, undergrads, cesium)