Blood spatter expert
Testimony starts at 53 minutes.
Perry wrongly says the spatter on the toilet room entrance is impact spatter. In fact it must be due to Travis coughing, sneeezing or coughing blood. The photo below shows blood which has dripped down, apparently diluted by saliva.
Perry also wrongly suggested the pool of blood near the toilet entrance could possibly be due to water pooling blood. See here.
In addition there was no testimony about the spatter inside the linen closet, or the trail of blood from the pool on the carpet to the blood pool close to the linen closet.