_Tendons and blood vessels_ readily lend themselves to transplantation
and will also be referred to later.
_Muscle and nerve_, on the other hand, do not retain their vitality when
severed from their surroundings and do not functionate as grafts except
for their connective-tissue elements, which it goes without saying are
more readily obtainable from other sources.
Portions of the _ovary_ and of the _thyreoid_ have been successfully
transplanted into the subcutaneous cellular tissue of the abdominal wall
by Tuffier and others. In these new surroundings, the ovary or thyreoid
is vascularised and has been shown to functionate, but there is not
sufficient regeneration of the essential tissue elements to "carry on";
the secreting tissue is gradually replaced by connective tissue and the
special function comes to an end. Even such temporary function may,
however, tide a patient over a difficult period.
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