4.—(1) In these Regulations, “class I specified bovine material” in relation to a bovine animal means—
(a)the skull, including the brain and eyes, tonsils and spinal cord, of an animal which was slaughtered or has died outside the United Kingdom at an age greater than 12 months;
(b)the brains, spinal cord, thymus, tonsils, spleen and intestines of an animal which was slaughtered or has died in the UK at an age greater than six months; and
(c)the skull (including the eyes) of an animal which was slaughtered or has died in the United Kingdom at an age greater than 12 months.
(2) In these Regulations “class II specified bovine material” in relation to a bovine animal means—
(a)the head of an animal which was slaughtered or has died in the United Kingdom at an age of six months or greater, except—
(i)any part of the head which is class I specified bovine material; and
(ii)the tongue, where it is removed from the head immediately after slaughter and before the head is stained; and
(b)the thymus and intestines of an animal which—
(i)died or was slaughtered in the United Kingdom at an age of two months or greater but less than six months; or
(ii)was slaughtered in the United Kingdom at an age of less than two months for human consumption.
(3) A whole carcase of a bovine animal which was slaughtered or has died in the United Kingdom shall not be treated for the purposes of these Regulations as class I or class II specified bovine material.