Object
Thal Anti-Radiation Serum
A Thal-created biological serum designed to neutralize Skaro's lethal radiation, secretly transferred to Susan Foreman and later seized by the Daleks for duplication and experimentation. Its failure in Section 3 Daleks exposes their radiation dependency and triggers the Daleks' lethal air tests in Section 2.
15 appearances
Purpose
Counter Skaro's ambient radiation to enable survival outside protected environments
Significance
Triggers Dalek extinction crisis, reveals biological reliance on radiation, shifts priorities from Thal surveillance to stockpiling nuclear waste, hands tactical edge to Doctor and Thals by fracturing Dalek unity and ideology
Appearances in the Narrative
When this object appears and how it's used