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).
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Question: Abstract: Twelve human laryngeal carcinomas and 14 normal vocal cord epithelia were studied in vitro by the method of tissue culture incorporating video time-lapse microscopy. Different events were photographed by taking 'stills' from the television monitor during play-back. Outgrowths from both tumour and normal explants formed only as monolayers. Mitoses were mainly found to be localized approximately mid-way between explant and the edge of the outgrowth. Some cells were seen to become suddenly active producing oscillating blebs and sometimes they detached themselves from the monolayer culture and changed appearance. This was more prevalent in the tumour cultures. In both tumour and normal cell cultures lymphocytes were observed and their normal chemokinetic movement was changed into a rapid chemotactic attraction by the presence of a mitotic epithelial cell. These lymphocytes appear to represent T-suppressor cells. The present study has shown that primary tissue culture can be a valuable tool in the study of laryngeal carcinoma. The interaction between mitotic tumour cells and lymphocytes may represent a transformation of T-lymphocytes into LAK cells.
Which is the apt title for the abstract? option1: Video time-lapse microscopy of human laryngeal carcinomas in vitro. option2: Cellular distribution of complement receptor type 4 (CR4): expression on human platelets.

Answer: Video time-lapse microscopy of human laryngeal carcinomas in vitro.

Question: Abstract: Severe aortic regurgitation developed in three patients after aortic valve replacement within six months due to long sutures prolapsing across the "annulus" of Bjork-Shiley prosthesis. At reoperation the offending sutures were trimmed or tucked back to the aortic wall to eliminate aortic regurgitation. Prolapse of unravelled knots may be the likely cause. Everting the sewing skirt during the first replacement may prevent this complication.
Which is the apt title for the abstract? option1: Bjork-Shiley valve malfunction by prolapsed sutures. option2: Long-term stabilization in the incus interposition technique.

Answer: Bjork-Shiley valve malfunction by prolapsed sutures.

Question: Abstract: Ninety-eight arthrotomy patients undergoing meniscectomy were given intraoperative intraarticular methylprednisolone (40 mg) or placebo using double-blind technique and were evaluated clinically at three days, two weeks, four weeks, eight weeks, and twelve weeks after operation. Patients who received methylprednisolone showed small but statistically significant accelerated rehabilitation time with respect to subjectively evaluated pain and range of motion, through two weeks after operation. After two weeks, there was no further advantage over placebo through 12 weeks of rehabilitation.
Which is the apt title for the abstract? option1: Intraarticular methylprednisolone acetate in knee arthrotomy. option2: New perspectives on a subclinical form of visceral leishmaniasis.

Answer:
Intraarticular methylprednisolone acetate in knee arthrotomy.