No anatomists can deny Fig. 2 shows lymph node remains on Mars.

Ref. 1 : Human lymph nodes, ranging from 2 mm to 2 cm, describled in
Wikipedia http://en.wikipedia.org/wiki/Lymph_node

Fig. 1: On a girl's tongue, lymph nodes are visible to the naked eyes
http://www.wretch.cc/album/show.php?i=lin440315&b=20&f=1555146777&p=61

Fig. 2: Many Martian lymph node fossils labeled and measured:
http://www.wretch.cc/album/show.php?i=lin440315&b=20&f=1555152062&p=65

Source of Fig. 2: This source is more clear than the above labeled
figure 2.
http://www.flickr.com/photos/hortonheardawho/2596452610/