The report of Aristotle and Philip of Opus, that the higher frequency of lunar than of solar eclipses was explained by the presence of the counter-earth, and perhaps also other earth-like bodies in space, takes us into a similar context.

One by one, Janki leading, they crept into the old gallery – a six-foot way with a scant four feet from thill to roof.

An vncouth paine torments my grieued ſoule, And death arreſts the organe of my voyce. Who entring at the breach thy ſword hath made, Sackes euery vaine and artier of my heart, […]

One model solved this issue by pseudotyping a lentivirus vector with rabies glycoprotein, which displays neurospecificity and is able to naturally cross the blood-brain barrier.