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In each training trial, a mouse was placed in one of the sectors and allowed to search for the hidden platform for 1 min

It is known that after B12 injection therapy is started that "healing symptoms" some similar to what you mention occur

Discover the science behind how other vitamins can boost mental clarity in our blog on 7 Vitamins for Brain Fog: Boost Your Mental Clarity and Focus
New Biotechnology
Mechanistically, DMF regulates the expression of factors involved in the de novo cysteine synthesis (CBS), cystine uptake (SLC7A11), and GSH generation (GCLC, GCLM) through NRF2-dependent and independent pathways

Thus, it has been demonstrated that kefir has a moderately mending effect on the livers insulin signaling pathway