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: We have measured the increase in height and width of the vertebral bodies and expressed them as percentages of the total growth in children aged 10 to 17 years. The first group, 10 boys and 10 girls, each had a single thoracic adolescent idiopathic scoliosis while the second group, 10 girls, each had a single lumbar adolescent idiopathic scoliosis. No significant differences were found between the growth increments and spinal dimensions of the vertebral bodies involved in the scoliotic curve and those vertebrae outside the curve in the same patient. The vertebrae were more slender in girls than in boys.
Which is the apt title for the abstract? option1: Observations on the growth of the adolescent spine. option2: Internal mammary artery graft [letter]

Output: Observations on the growth of the adolescent spine.

Input: Consider Input: Abstract: Pertussigen is a protein toxin of Bordetella pertussis that acts as a powerful stimulator of the intensity and duration of delayed-type hypersensitivity (DTH) in mice. This study describes the potent in vivo effect of pertussigen on the levels of antigen-specific macrophage-activating lymphokine(s); lymphokine(s) was measured by the stimulation of macrophage procoagulant activity (mPCA), or plasminogen activator (PA) activity. Lymphoid cells were removed from immunized animals and cultured with specific antigen, keyhole limpet hemocyanin, ovalbumin, or human gamma-globulin. The culture supernatants were then incubated with the monocyte-like cell line WEHI-265 to measure mPCA or with WEHI-265 or resident peritoneal macrophages to measure PA activity. Mice were given pertussigen at the time of immunization, and the subsequent generation by lymphocyte supernatants of both of these macrophage activities proved to be greatly enhanced; the effect of pertussigen was antigen specific. Pertussigen thus induces an increase in lymphokine(s) production responsible for the in vitro increase in macrophage mPCA and PA activity and which may be responsible for some of the potent immune effects of this agent in vivo.
Which is the apt title for the abstract? option1: Pertussigen in vivo enhances antigen-specific production in vitro of lymphokine that stimulates macrophage procoagulant activity and plasminogen activator. option2: DNA conformation is determined by economics in the hydration of phosphate groups.

Output: Pertussigen in vivo enhances antigen-specific production in vitro of lymphokine that stimulates macrophage procoagulant activity and plasminogen activator.

Input: Consider Input: Abstract: The ICU records of 31 patients with the acquired immunodeficiency syndrome were reviewed. Of 23 (74%) patients admitted for respiratory failure requiring intubation and mechanical ventilation, 20 (87%) patients had Pneumocystis carinii and/or cytomegalovirus pneumonia. Of the eight patients admitted without respiratory failure, five (63%) were monitored after brain biopsy. Respiratory failure patients remained in the ICU for 10 +/- 1 days, compared to 5 +/- 1 days for those without respiratory failure (p less than .05). Overall mortality was 24 patients (77%); 21 (91%) of 23 respiratory failure patients died, compared to three (38%) of the eight without respiratory failure (p less than .01). All seven ICU survivors lived to hospital discharge.
Which is the apt title for the abstract? option1: ICU survival of patients with the acquired immunodeficiency syndrome. option2: High-functioning multiple personality patients. Three cases.
Output: ICU survival of patients with the acquired immunodeficiency syndrome.