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: Platelet-activating factor (PAF-acether), an inflammatory mediator with a wide range of biological activities including neutrophil aggregation and chemotaxis, was studied for its effect on human eosinophil locomotion (chemotaxis and chemokinesis). Human eosinophils (25-95% purity) were obtained from donors with a variety of diseases associated with hypereosinophilia. PAF-acether elicited directional locomotion of eosinophils, in a time- and dose-dependent fashion, at concentrations from 10(-5) to 10(-8) M; lyso-PAF had minimal activity over the same dose range. Compared with PAF-acether, the eosinophil locomotory responsiveness of leukotriene B4 (LTB4), histamine, and the valyl- and alanyl-eosinophil chemotactic factor of anaphylaxis (ECF-A) tetrapeptides was negligible. Conversely, neutrophil responsiveness to PAF-acether (optimum 10(-6) M) was comparable in effect to LTB4 (optimum dose 10(-8) M). It was shown that PAF-acether elicited both chemotaxis and chemokinesis of eosinophils. Comparison of normal density and light density eosinophils revealed no qualitative difference in the response to PAF-acether and the other chemoattractants, although the light density cells seemed to demonstrate a greater degree of locomotion to PAF-acether and LTB4. Thus, PAF-acether appears to be a potent eosinophilotactic agent which may play a role in inflammatory reactions characterized by eosinophil infiltration.
Which is the apt title for the abstract? option1: Platelet-activating factor. A potent chemotactic and chemokinetic factor for human eosinophils. option2: Oral leukoplakia [editorial]
Example Output: Platelet-activating factor. A potent chemotactic and chemokinetic factor for human eosinophils.

Example Input: Abstract: A 13-year-old female ingested an acute overdose of cyproheptadine hydrochloride (Periactin) and presented for treatment. She manifested all the classic signs and symptoms of an acute antihistamine overdose, including psychosis, except for miotic, minimally reactive pupils. The patient was supportively managed. All sequelae of the ingestion resolved within four days, and the child was released from the hospital. We discuss the unusual presentation of miotic pupils in an acute cyproheptadine overdose.
Which is the apt title for the abstract? option1: An unusual case of cyproheptadine (Periactin) overdose in an adolescent female. option2: Early postoperative function of suppressed parathyroid glands with microscopic hyperplasia.
Example Output: An unusual case of cyproheptadine (Periactin) overdose in an adolescent female.

Example Input: Abstract: Computerised tomography of the lumbar spine was performed on 22 patients with clinical evidence of prolapse of an intervertebral disc and normal or equivocal radiculograms. Of 11 patients with positive scans who had an operation the presence of pathology was confirmed in 10. Although CT scanning is always helpful in diagnosing disc disorders, where facilities are scarce (as in Great Britain) it is best employed in patients with negative or non-contributory radiculography.
Which is the apt title for the abstract? option1: The role of computerised tomography in intervertebral disc prolapse. option2: Yellow nail syndrome [letter]
Example Output:
The role of computerised tomography in intervertebral disc prolapse.