TASK DEFINITION: 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).
PROBLEM: Abstract: It has been assumed that the molecular weight (MW) cut-off of a newly fabricated polysulfone capillary dialyzer (F60, Fresenius, FRG) is similar to that of the human glomerulus. We recently tested the device in vivo and found this not to be so, based on the device's ability to eliminate substances of a MW of 10,000 to 60,000 daltons. One of the reasons for this discrepancy was found to be the influence of secondary membrane formation on solute permeability. Endogenous marker substances of a defined MW (beta 2-microglobulin, myoglobin, RBP, alpha 1-microglobulin, acid alpha 1-glycoprotein, alpha 1-antitrypsin, prealbumin, and albumin were measured by laser nephelometry or radioimmune assay; sieving coefficients (SC) and protein eliminations were calculated for each low MW protein.
Which is the apt title for the abstract? option1: Permeability and secondary membrane formation of a high flux polysulfone hemofilter. option2: Electrical and lightning injuries in children.

SOLUTION: Permeability and secondary membrane formation of a high flux polysulfone hemofilter.

PROBLEM: Abstract: In a three-dimensional study of the distribution of anterior horn cells in the C8 segment of the human spinal cord we have recognized lateral and medial zones of motor neuron groupings, but have not been able to recognize subgroups of neurons within these groupings resembling the anatomical columns described by earlier investigators. This observation does not invalidate the concept of functional groupings within these anterior horn cell pools. In studies of the same segment in cords obtained at autopsy from patients with motor neuron disease, zones of focal loss of motor neurons were identified, without consistent severity or distribution at different sectional levels. These findings imply varying resistance to the disease in different pools of motor neurons.
Which is the apt title for the abstract? option1: Focal loss of anterior horn cells in the cervical cord in motor neuron disease. option2: Prevention of allergic reactions to penicillin.

SOLUTION: Focal loss of anterior horn cells in the cervical cord in motor neuron disease.

PROBLEM: Abstract: A case history of a seven-month-old girl arriving at the emergency department in cardiac arrest from an inhalation injury without venous access is described. The patient was resuscitated with endotracheal administration of epinephrine and atropine. A review of the literature of endotracheal administration of medications in pediatrics subsequently follows.
Which is the apt title for the abstract? option1: Endotracheal administration of epinephrine and atropine. option2: Pheochromocytoma: nuclear deoxyribonucleic acid patterns studied by flow cytometry.

SOLUTION:
Endotracheal administration of epinephrine and atropine.