These mutations can lead to various diseases at the tissue level.

Similarly, Wilson's disease is associated with elevated tissue levels of copper.

At the tissue level, this activity is reversed.

However, as long as equal contribution is assured, pooling at the tissue level should not make a big difference.

"Grid generation for brain visualization at the cellular and tissue level".

Necrosis generally involves a group of contiguous cells or occurs at the tissue level.

In the early stages this is generally an inadequate tissue level of oxygen.

DHT is most commonly formed at the tissue level by 5α-reduction of testosterone.

Step five: repair the damage on a tissue level rather than cellular, restoring organ function and what have you.

The whole organism's at war with itself on the tissue level, it's got some kind of cellular Red Queen thing happening.