How many copies per particle are created by the enterotoxin?
CREATE TABLE table_140968_1 (
    copies_per_particle VARCHAR,
    function VARCHAR
)
SELECT copies_per_particle FROM table_140968_1 WHERE function = "Enterotoxin"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many copies per particle are created by the enterotoxin? ### Input: CREATE TABLE table_140968_1 (
    copies_per_particle VARCHAR,
    function VARCHAR
) ### Response: SELECT copies_per_particle FROM table_140968_1 WHERE function = "Enterotoxin"