How to transport/store box slides with biopsy material? - 1260296

We need to transport our biopsy slides (box HE slides) ourselves for a few hours in traffic from one side of the city to the other. How best to do this? The car has air conditioning -- but should samples be kept on ice? I presume that they should avoid getting wet at all costs.

(I thought that this is usually done by medical courier, but I am told that a medical courier isn't at our immediate avail.)

If we need to keep the samples ourselves a few days -- can that (theoretically) be done in a fridge or at room temperature? (This is a tropical country.)

Thanks,

aschweig