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: It is well known that LH and human CG (hCG) induce an increase in total ovarian blood flow. The effect of LH/hCG on luteal blood flow, however, is unknown. This work studies the effect of hCG on both luteal and ovarian blood flows at different stages of pseudopregnancy in adult female rats. Pseudopregnancy was induced by mating with sterile male rats. The length of pseudopregnancy was 13 +/- 1 days and, during this time, blood flow was measured by the injection of radioactive microspheres during anesthesia. At autopsy, the corpora lutea were identified and extirpated under a stereomicroscope. These, and the remaining ovary, were then counted for radioactivity and the blood flow was calculated. Progesterone levels were determined in plasma and ovarian tissues. Furthermore, the responsiveness of adenylate cyclase was tested in ovarian tissues at day 6 of pseudopregnancy. An intraarterial injection of hCG (50 IU) or vehicle (saline) was given 20 min before the blood flow determinations in anesthetized rats. The luteal blood flow was not changed by hCG on days 2, 6, and 11 of pseudopregnancy, whereas in the remaining ovary the blood flow increased more than 2-fold, thereby resulting in redistribution of the blood flow. Ten micrograms of NIH-LH-B9, tested at day 6 of pseudopregnancy, mimicked the effect of hCG. At day 6 of pseudopregnancy, hCG (50 IU) was given ip to conscious rats 200 min and 24 h before blood flow determinations. At 200 min after hCG there was a more pronounced redistribution of ovarian blood flow with a 45% reduction in luteal blood flow and a 4-fold increase in flow through the remaining ovary. LH as well as hCG doubled the progesterone content of the remaining ovary. In the corpora lutea an increased progesterone content was seen after 200 min of hCG exposure. At 24 h after hCG injection, all parameters had returned to control levels except that adenylate cyclase was nonresponsive. The increase in the total ovarian blood flow coincides with the increased steroidogenesis and these effects are likely due to release of metabolites and/or vasoactive substances. Despite this increase, the blood flow of the corpus luteum was not increased rendering vascular mechanisms unlikely as a part of the acute LH/hCG effects on corpus luteum of pseudopregnancy.
Which is the apt title for the abstract? option1: Redistribution of ovarian blood flow after injection of human chorionic gonadotropin and luteinizing hormone in the adult pseudopregnant rat. option2: Neurosurgical use of human dura mater sterilized by gamma rays and stored in alcohol: long-term results.

Output: Redistribution of ovarian blood flow after injection of human chorionic gonadotropin and luteinizing hormone in the adult pseudopregnant rat.

Input: Consider Input: Abstract: A study was undertaken to determine the effect of gender on criteria for the quantitative analysis of exercise-redistribution 201Tl myocardial scintigraphy. The studies of 26 normal females and 23 normal males were subjected to bilinear interpolative background subtraction and horizontal profile analysis. Significant sexual differences were found in both regional uptake ratios and washout rates. These differences primarily reflected a proportionately decreased anterior and upper septal uptake in females, and faster washout in females. Faster myocardial 201Tl washout rates in females could not be clearly ascribed to either a physiological or artifactual explanation. It is concluded that since important differences exist between males and females in the detected pattern of 201Tl myocardial uptake and washout, sex-specific criteria may enhance the predictive accuracy of exercise-redistribution 201Tl myocardial scintigraphy.
Which is the apt title for the abstract? option1: Sex-specific criteria for interpretation of thallium-201 myocardial uptake and washout studies. option2: Cavitation bubble dynamics and acoustic transient generation in ocular surgery with pulsed neodymium: YAG lasers.

Output: Sex-specific criteria for interpretation of thallium-201 myocardial uptake and washout studies.

Input: Consider Input: Abstract: Rat liver microsomal insulin-like growth factor-II (IGF-II) receptor has been purified to homogeneity using a single step affinity chromatographic procedure on agarose-IGF-II with elution at pH 4. Determined by either IGF-II binding or a direct RIA for receptor, purification of 2000-fold was obtained. The mean recovery was 28% for five such preparations. Sodium dodecyl sulfate-electrophoresis and autoradiography of purified receptor, radioiodinated receptor, and affinity-labeled receptor all indicated a molecular mass of approximately 250K. Scatchard analysis of IGF-II binding to purified receptor, solubilized microsomal membranes, or plasma membranes showed a single class of binding site with an affinity constant of 6 X 10(10) liter/mol in all cases. Potent antibodies to the purified receptor were raised in rabbits, capable of inhibiting 50% of IGF-II binding at dilutions of 1:170,000 and also of fully precipitating IGF-II-prelabeled receptor at 1:50,000. Both types of antibodies reacted with IGF-II receptors in rat adipose tissue, brain, heart, kidney, lung, and spleen. However, little cross-reactivity was seen with other species. Comparison of the ability of receptor antibodies to inhibit IGF-II binding to microsomal and plasma membranes indicated a specific immunological difference between the IGF-II receptors in the two membrane preparations.
Which is the apt title for the abstract? option1: Purification and immunological characterization of the rat liver insulin-like growth factor-II receptor. option2: Temporoparietal craniopagus. Case report and review of the literature.
Output: Purification and immunological characterization of the rat liver insulin-like growth factor-II receptor.