Figure 5.  Plaque forming cells (PFC) counted in Icr:Icl mouse spleen samples after housing with softwood or hardwood bedding.  Marked value indicates significantly higher PFC count as compared to cellulose group (p < 0.05).  Adapted from Odynets et al. 1991. 

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Effects of Softwoods on Respiratory Physiology and Function
Effects of Softwoods on Liver Physiology and Function
Additional Harmful Chemicals in Softwoods
Alternative Beddings for Companion Animals

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