Cryptosporidium - physiology, Mytilus edulis - genetics, Cryptosporidium parvum - isolation & purification, Environmental Monitoring - methods, Mytilus, Molecular Sequence Data, Toxoplasma - isolation & purification, California, Cryptosporidium parvum - genetics, Phylogeny, Toxoplasma - physiology, Polymerase Chain Reaction - methods, Toxoplasma - classifica...