Blood, 0.05 - 0.1 mL, was collected from the submandibular vein of P. leucopus and from the retro - orbital sinus or from the lateral or medial saphenous veins of larger mammals following inhalant anesthesia (mice, chipmunks: a 20 — 30 % v / v
mixture of isoflurane and propylene glycol) or injectable anesthesia (larger mammals: intramuscular Ketamine (70 - 90 mg / kg) and
Xylazine (10 mg / kg)-RRB-.