“Ood graft was a substance that, suspended in a biological compound, could change a human into an...Ood graft
“Sleep dust was a crusty, sand-like substance resembling dust, discharged from humans during...Sleep dust
“Primordial soup was a liquid substance composed largely of sugars and amino acids. The Seventh...Primordial soup
“Chloroform was an organic compound. According to the Eighth Doctor, an American colonel wanted...Chloroform
“Wood was an organic material deriving from trees. This was a widely-known fact. (TV: City of...Wood
This category has the following 3 subcategories, out of 3 total.