PARASITES OF MUSCLE 119 
the tongue, cervical muscles, muscles of the shoulder, 
pillars of the diaphragm, intercostal muscles, psoas 
muscles, muscles of the thigh. The myocardium is also 
frequently affected, as are also various organs of the 
body. 
The muscles containing the Cysticerci are flabby and 
pale in colour, and contain small cavities, which lodge 
the parasites. On section, the flesh is wet, and, if badly 
affected, a yellowish clear fluid may exude. In pork 
that has been measly for a considerable length of time 
the Cysticerci become calcified. 
Symptoms.—Usually symptoms are not recognizable 
during life. When very advanced, there may be diffi- 
culty in muzzling, loss of energy, anorexia, diarrhoea, 
stomatitis, and death. 
The Cysticercus cellulose of the pig, when ingested by 
man, develops in the intestine into Tenia solium. The 
worm becomes mature about two months later. 
The flesh, when eaten, is gritty and sweet to the taste. 
Roasting at 120° F. for one minute kills the parasite, but 
this temperature is not usually reached in the centre of 
pork while being cooked for the table, though the ex- 
ternal temperature may be 212° F. 
In smoked hams and pickled pork the vitality of the 
Cysticerci is usually weakened. 
Measles of Beef. 
This condition is produced by the presence of Cystz- 
cercus bovis in the muscles of the ox. 
This is an ovoid cyst, measuring from 3 to 15 milli- 
metres in length. It shows a small, dense, yellowish 
area at one point, corresponding to the invaginated 
head. When extruded, the head presents the characters 
of that of Tenia saginata of man, tetragonal in shape, 
devoid of hooks, and possessing four large rounded 
suckers. 
