Structures within leaves called
transfusion tissue are surprisingly large in giant sequoia leaves and seem to promote water flow through the leaf.
Leaves in the upper crown are more succulent than leaves in the lower crown in part because they contain more
transfusion tissue.
While it's common for tall conifers to have
transfusion tissue in upper crown leaves, the cross-sections of upper crown giant sequoia leaves measured in this study have three times more
transfusion tissue than the leaves of the giant sequoia's super-tall relative, Sequoia sempervirens, the coast redwood.
What's more, according to Chin and Sillett,
the transfusion tissue also accumulates heat and drives transpiration.
The giant sequoia's
transfusion tissue effectively «stretches across» most of a leaf's width.
Not exact matches
Generally speaking, the American public is well accustomed to the concept of
tissue and organ transplantation, as stories of life - saving heart and kidney transplants, or American Red Cross blood drives collecting blood and platelets for
transfusions have become commonplace.
Most commonly, patients receive
transfusions of red blood cells, the component of blood that shuttles oxygen to
tissues throughout the body.
The research suggests there are more people infected in lymphoid
tissues, who may never develop the disease but could still infect others via blood
transfusions or organ donations
In pathological conditions, MSCs migrate preferentially into lymphoid organs, allografts, injured and / or inflammatory
tissue sites after systemic
transfusion, where they interact with the activated immune cells and modulate their function 51, 52.
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transfusions, as well as other soft
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