how many porphyria have substrate δ-aminolevulinic acid
CREATE TABLE table_182499_1 (porphyria VARCHAR, substrate VARCHAR)
SELECT COUNT(porphyria) FROM table_182499_1 WHERE substrate = "δ-Aminolevulinic acid"
### Context: CREATE TABLE table_182499_1 (porphyria VARCHAR, substrate VARCHAR) ### Question: how many porphyria have substrate δ-aminolevulinic acid ### Answer: SELECT COUNT(porphyria) FROM table_182499_1 WHERE substrate = "δ-Aminolevulinic acid"