The answer would be "B. cocaine". Cocaine is an illegal stimulant unlike the other options listed above.
5 down: thymus
12 down: spleen
12 across: suppressor T
11 across: macrophage
7 down: autoimmune
8 down: bone marrow
5 down: lymph nodes
If i did miss something, comment below ^_^
Answer:
CSF ( Cerebrospinal fluid) is the colorless, clear fluid present in the spinal cord and brain. The ependymal cells present in the choroid plexus is responsible for the production of CSF.
Around 500 ml of the CSF is produced every day in the central nervous system. The main function of the CSF is the covering of the brain and cushions the central nervous system. This fluid allows the water medium for the diffusion of the chemicals and nutrients
