Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Input: Consider Input: Abstract: Subacute combined degeneration of the cord is a rare complication of folate deficiency. Disturbance of methylation reactions in nervous tissue probably underlie subacute combined degeneration of the cord arising from folate as well as vitamin B12 deficiency. Methyl tetrahydrofolate is the form in which folic acid is transported into the CNS. Therefore methyl tetrahydrofolate treatment of the neurological and psychiatric manifestations of folate deficiency would seem to be theoretically advantageous. A case of subacute combined degeneration of the cord due to dietary folate deficiency and associated with an organic brain syndrome is reported. There was striking haematological, neurological and psychiatric response to methyl folate treatment.
Which is the apt title for the abstract? option1: Subacute combined degeneration of the cord due to folate deficiency: response to methyl folate treatment. option2: Probing for the human coronavirus OC43 in multiple sclerosis.

Output: Subacute combined degeneration of the cord due to folate deficiency: response to methyl folate treatment.

Input: Consider Input: Abstract: Cow snout epidermal cells digested by 0.25% trypsin were separated into three regions of keratinocytes by Percoll density gradient centrifugation. The membrane fluidity of keratinocytes in each region was measured by electron spin resonance using 5-doxyl stearic acid (5-DSA) as a labeling agent. The order parameter(s) showed higher values as the depth of the epidermis decreased: lower region of epidermis, 0.632; upper region, 0.645; and horny cells, 0.680. These data indicated that membrane fluidity of epidermal cells decreased as cells approached the surface.
Which is the apt title for the abstract? option1: Spin labeling study on membrane fluidity of epidermal cell (cow snout epidermis). option2: New hepatitis-B vaccine launched [news]

Output: Spin labeling study on membrane fluidity of epidermal cell (cow snout epidermis).

Input: Consider Input: Abstract: An 87-year-old woman presented with the nephrotic syndrome 12 months after administration of ketoprofen, 100 mg daily for osteoarthritis. Clinical course and laboratory data were consistent with drug-induced nephropathy. Kidney biopsy showed membranous glomerulonephritis. Evolution was favorable with resolution of proteinuria after drug withdrawal and steroid administration. A review of the literature on nephrotic syndrome associated with NSAID reveals membranous glomerulonephritis to be an unusual complication.
Which is the apt title for the abstract? option1: Reversible membranous glomerulonephritis associated with ketoprofen. option2: Dilutional effect of increased sebaceous gland activity on the proportion of linoleic acid in sebaceous wax esters and in epidermal acylceramides.
Output: Reversible membranous glomerulonephritis associated with ketoprofen.