Day 12

0910: Arrive but no sign of RM.

0915: RM arrives, but there aren't any pigs to look at today (again). I go to Pathology to help with the otters again.

1100: Off to Bacteriology - sticking yesterday's swabs into tetrathionate broth. The mixture is activated by adding iodine to it, then the swabs are placed in the broth and broken off and the container sealed. Tetrathionate is supposed to supress other types of bacteria and only let Salmonella and a few select others grow. Unfortunately, some of the few select others also happen to look very much like Salmonella on an agar plate!

Otters for the rest of the day!