Essential 3 +T (CDT) by Colorado Serum Co. For use in healthy cattle, sheep and goats as an aid in the prevention of enterotoxemia caused by Clostridium perfringens types B, C and D. Also for use in healthy swine as an aid in the prevention of enteritxemia caused by Clostridium perfringens type C. For the long term protection against tetanus. Do not use within 21 days of slaughter. Dosage: Inject 2 ml subcutaneouslyor intramusculaly. Repeat full dose in 3 to 4 weeks.