HT Histotechnician

Answer: C - 2-5 degree Celsius above the melting point of the paraffin used
The paraffin oven is maintained at a temperature of 2-5 degree Celsius above the melting point of the paraffin used. This is the ideal temperature to maintain since higher temperatures can cause shrinkage of the tissues, which may damage the specimen. On the other hand, a lower temperature could not melt the paraffin efficiently to be used in impregnation. Therefore, all the other choices are not ideal temperatures for the paraffin oven to be effective.