The medullary sinuses ( or " sinusoids " ) are vessel-like spaces separating the medullary cords.
2.
The "'medullary cords "'are cords of lymphatic tissue, and include plasma cells, macrophages, and B cells.
3.
Tuckerman distinguished " Ramalina ceruchis " and " R . homalea " from other species of " Ramalina " as having medullary cords free of the cortical layer, and at length axial; or indistinct and having spermogones black ( black pycnidia ).
4.
This was in contrast to medullary cords uniting mostly with the cortical layer; spermogones commonly pale . The former was recognized by Phillip Rundel and Peter Bowler in 1978 as belonging to the genus " Niebla " that included species from Macaronesia that also had medullary cords free from the cortex.
5.
This was in contrast to medullary cords uniting mostly with the cortical layer; spermogones commonly pale . The former was recognized by Phillip Rundel and Peter Bowler in 1978 as belonging to the genus " Niebla " that included species from Macaronesia that also had medullary cords free from the cortex.
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