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).

Example Input: Abstract: We describe a patient with hypertrophic osteoarthropathy secondary to regional enteritis, and review the literature on their association. The apparent different distribution of hypertrophic osteoarthropathy secondary to other causes may be artifactual and related to inadequate radiological investigation. Hypertrophic osteoarthropathy does not appear to be related to regional enteritis activity. 
 Which is the apt title for the abstract? option1: Is hypertrophic osteoarthropathy really so rare in regional enteritis? option2: AIDS: WHO plans megaprogramme [news]
Example Output: Is hypertrophic osteoarthropathy really so rare in regional enteritis?

Example Input: Abstract: Specific radioimmunoassays for the 7-S domain of type IV collagen and the fragment P1 of laminin were used to quantify these basement membrane proteins in human kidney cortex at different ages and in some patients with diabetes mellitus. The antigens were solubilized by treating the tissue samples with the proteolytic enzymes collagenase, trypsin and pepsin. Total collagen content (as indicated by hydroxyproline concentration) increased with age, and the proportion of the collagen that could be solubilized by any enzyme treatment decreased. The type IV collagen concentration increased significantly with age, whereas the laminin concentration tended to decrease. In the one case of a type I diabetic the amounts of both antigens exceeded those in the age matched controls. In four type II diabetics the results were comparable with those for other aged cases. The distribution of the proteins was studied using the peroxidase-antiperoxidase method. The staining intensity and thickness of both antigens increased with age in the mesangium and Bowmans capsules, the change in type IV collagen staining being more evident. In diabetic patients these changes were more pronounced and other basement membranes appeared thicker in the stainings. These results indicate that basement membrane material accumulates in the kidney cortex during aging and that an alteration takes place in the composition of the basement membranes, the proportion of type IV collagen increasing and that of laminin decreasing. 
 Which is the apt title for the abstract? option1: Effect of age and diabetes on type IV collagen and laminin in human kidney cortex. option2: Cervical and lumbopelvic traction. To stretch or not to stretch.
Example Output: Effect of age and diabetes on type IV collagen and laminin in human kidney cortex.

Example Input: Abstract: Using succinate as a substrate, the respiratory control ratios of liver mitochondria from burned male Sprague-Dawley rats with full skin thickness burns covering 20 per cent of the body surface area were increased at 15, 30, 45 and 60 min after burn, the peak being at 30 min post-burn. A sham group acted as control. In comparison with the sham group, the specific activity of succinic dehydrogenase was slightly decreased and the activities of cytochromes b and c + c were decreased significantly 30 min after burning. All the results suggest a lack of increased metabolic activity during the early phase of burn injury. 
 Which is the apt title for the abstract? option1: Functional changes in rat-liver mitochondria during the early phase of burn injury. option2: Contact allergens and prevention of contact dermatitis.
Example Output:
Functional changes in rat-liver mitochondria during the early phase of burn injury.

