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).

[EX Q]: Abstract: Two immunologic subclasses of human pepsinogen I alpha-PG I and beta-PG I, have been identified based on their reactivity toward a murine monoclonal antibody that recognizes an epitope on the alpha-PG I isozymogens. The antibody was used to purify the major alpha- and beta-isozymogens from gastric mucosa and to determine their contributions to the previously described genetic polymorphism of PG I. The alpha-epitope was localized to the pepsin region of the molecules. The two major alpha-PG I isozymogens (Pg 3 alpha and Pg 5 alpha) and the major beta-PG I isozymogen (Pg 4 beta) were demonstrated to contain net charge differences located in the respective pepsin and activation peptide regions. We propose that the alpha- and beta-subclasses contain net charge amino acid substitutions encoded by the corresponding pepsinogen genes: PGA3, PGA4, and PGA5.
Which is the apt title for the abstract? option1: Immunochemical, electrophoretic, and genetic heterogeneity of pepsinogen I. Characterization with monoclonal antibodies. option2: Misrepresentation of stimulant street drugs: a decade of experience in an analysis program.
[EX A]: Immunochemical, electrophoretic, and genetic heterogeneity of pepsinogen I. Characterization with monoclonal antibodies.

[EX Q]: Abstract: Anticoagulation is the cornerstone in the treatment of deep vein thrombosis. However, the treatment of septic deep vein thrombosis is controversial. Unlike septic superficial vein thrombosis, venous excision is often associated with limb-threatening or even life-threatening complications. Some authors have suggested thrombectomy as the only means of resolving the sepsis. We reviewed our experience with seven patients who had septic deep vein thrombosis. Phlebography or noninvasive studies documented deep vein thrombosis and blood cultures were positive in all patients. The mean age was 31.5 years with a male/female ratio of 5:2. All patients were treated with anticoagulants and intravenous antibiotics. One patient required surgical exploration for associated abscess of the groin. The patients became afebrile with normal white blood cell counts from 3 to 18 days after therapy was begun. No cases of recurrent sepsis occurred. We conclude that antibiotic therapy and anticoagulation are adequate treatment and therefore consider venous thrombectomy unnecessary.
Which is the apt title for the abstract? option1: Septic deep vein thrombosis. option2: Polymicrobial bacterial sepsis and defective neutrophil chemotaxis in an infant with cystic fibrosis.
[EX A]: Septic deep vein thrombosis.

[EX Q]: Abstract: Results of an anthralin stain removal study on white 65% polyester/35% cotton, white 100% polyester, white 100% cotton, a white shower curtain, white tile with crevice, and white ceramic shower tile are reported. An optimum stain removal technic was developed by using a 10-minute soak in full-strength chlorine bleach (Good Measure or Clorox) followed by a water rinse and air drying. This technic completely removed all stains of 24-hour duration from the test fabrics. The stain removal test on shower curtains, floor tiles, and ceramic shower tiles was also discussed.
Which is the apt title for the abstract? option1: Anthralin stain removal. option2: Case records of the Massachusetts General Hospital. Update of normal reference laboratory values.
[EX A]:
Anthralin stain removal.